#include <asm/arch/sys_proto.h>
enum pll_clocks {
- PLL_SYS, /* System PLL */
- PLL_BUS, /* System Bus PLL*/
- PLL_USBOTG, /* OTG USB PLL */
- PLL_ENET, /* ENET PLL */
+ PLL_ARM, /* PLL1: ARM PLL */
+ PLL_528, /* PLL2: System Bus PLL*/
+ PLL_USBOTG, /* PLL3: OTG USB PLL */
+ PLL_AUDIO, /* PLL4: Audio PLL */
+ PLL_VIDEO, /* PLL5: Video PLL */
+ PLL_ENET, /* PLL6: ENET PLL */
+ PLL_USB2, /* PLL7: USB2 PLL */
+ PLL_MLB, /* PLL8: MLB PLL */
};
-struct mxc_ccm_reg *imx_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
+struct mxc_ccm_reg *const imx_ccm = (void *)CCM_BASE_ADDR;
+struct anatop_regs *const anatop = (void *)ANATOP_BASE_ADDR;
+
+int clk_enable(struct clk *clk)
+{
+ int ret = 0;
+
+ if (!clk)
+ return 0;
+ if (clk->usecount == 0) {
+ debug("%s: Enabling %s clock\n", __func__, clk->name);
+ ret = clk->enable(clk);
+ if (ret)
+ return ret;
+ clk->usecount++;
+ }
+ assert(clk->usecount > 0);
+ return ret;
+}
+
+void clk_disable(struct clk *clk)
+{
+ if (!clk)
+ return;
+
+ assert(clk->usecount > 0);
+ if (!(--clk->usecount)) {
+ if (clk->disable) {
+ debug("%s: Disabling %s clock\n", __func__, clk->name);
+ clk->disable(clk);
+ }
+ }
+}
+
+int clk_get_usecount(struct clk *clk)
+{
+ if (clk == NULL)
+ return 0;
+
+ return clk->usecount;
+}
+
+u32 clk_get_rate(struct clk *clk)
+{
+ if (!clk)
+ return 0;
+
+ return clk->rate;
+}
+
+struct clk *clk_get_parent(struct clk *clk)
+{
+ if (!clk)
+ return 0;
+
+ return clk->parent;
+}
+
+int clk_set_rate(struct clk *clk, unsigned long rate)
+{
+ if (clk && clk->set_rate)
+ clk->set_rate(clk, rate);
+ return clk->rate;
+}
+
+long clk_round_rate(struct clk *clk, unsigned long rate)
+{
+ if (clk == NULL || !clk->round_rate)
+ return 0;
+
+ return clk->round_rate(clk, rate);
+}
+
+int clk_set_parent(struct clk *clk, struct clk *parent)
+{
+ debug("Setting parent of clk %p to %p (%p)\n", clk, parent,
+ clk ? clk->parent : NULL);
+
+ if (!clk || clk == parent)
+ return 0;
+
+ if (clk->set_parent) {
+ int ret;
+
+ ret = clk->set_parent(clk, parent);
+ if (ret)
+ return ret;
+ }
+ clk->parent = parent;
+ return 0;
+}
+
+#define PLL_LOCK_BIT (1 << 31)
+
+static inline int wait_pll_lock(u32 *reg)
+{
+ int loops = 0;
+ u32 val;
+
+ while (!((val = readl(reg)) & PLL_LOCK_BIT)) {
+ loops++;
+ if (loops > 1000)
+ break;
+ udelay(1);
+ }
+ if (!(val & PLL_LOCK_BIT) && !(readl(reg) & PLL_LOCK_BIT))
+ return -ETIMEDOUT;
+ return 0;
+}
#ifdef CONFIG_MXC_OCOTP
void enable_ocotp_clk(unsigned char enable)
}
-#if defined(CONFIG_FEC_MXC) && !defined(CONFIG_MX6SX)
+#if defined(CONFIG_FEC_MXC) && !defined(CONFIG_SOC_MX6SX)
void enable_enet_clk(unsigned char enable)
{
- u32 mask = MXC_CCM_CCGR1_ENET_CLK_ENABLE_MASK;
+ u32 mask, *addr;
+
+ if (is_cpu_type(MXC_CPU_MX6UL)) {
+ mask = MXC_CCM_CCGR3_ENET_MASK;
+ addr = &imx_ccm->CCGR3;
+ } else {
+ mask = MXC_CCM_CCGR1_ENET_MASK;
+ addr = &imx_ccm->CCGR1;
+ }
if (enable)
- setbits_le32(&imx_ccm->CCGR1, mask);
+ setbits_le32(addr, mask);
else
- clrbits_le32(&imx_ccm->CCGR1, mask);
+ clrbits_le32(addr, mask);
}
#endif
#ifdef CONFIG_MXC_UART
void enable_uart_clk(unsigned char enable)
-{
- u32 mask = MXC_CCM_CCGR5_UART_MASK | MXC_CCM_CCGR5_UART_SERIAL_MASK;
-
- if (enable)
- setbits_le32(&imx_ccm->CCGR5, mask);
- else
- clrbits_le32(&imx_ccm->CCGR5, mask);
-}
-#endif
-
-#ifdef CONFIG_SPI
-/* spi_num can be from 0 - 4 */
-int enable_cspi_clock(unsigned char enable, unsigned spi_num)
{
u32 mask;
- if (spi_num > 4)
- return -EINVAL;
+ if (is_cpu_type(MXC_CPU_MX6UL))
+ mask = MXC_CCM_CCGR5_UART_MASK;
+ else
+ mask = MXC_CCM_CCGR5_UART_MASK | MXC_CCM_CCGR5_UART_SERIAL_MASK;
- mask = MXC_CCM_CCGR_CG_MASK << (spi_num * 2);
if (enable)
- setbits_le32(&imx_ccm->CCGR1, mask);
+ setbits_le32(&imx_ccm->CCGR5, mask);
else
- clrbits_le32(&imx_ccm->CCGR1, mask);
-
- return 0;
+ clrbits_le32(&imx_ccm->CCGR5, mask);
}
#endif
#endif
#ifdef CONFIG_SYS_I2C_MXC
-/* i2c_num can be from 0 - 2 */
+/* i2c_num can be from 0 - 3 */
int enable_i2c_clk(unsigned char enable, unsigned i2c_num)
{
u32 reg;
u32 mask;
+ u32 *addr;
- if (i2c_num > 2)
+ if (i2c_num > 3)
return -EINVAL;
-
- mask = MXC_CCM_CCGR_CG_MASK
- << (MXC_CCM_CCGR2_I2C1_SERIAL_OFFSET + (i2c_num << 1));
- reg = __raw_readl(&imx_ccm->CCGR2);
- if (enable)
- reg |= mask;
- else
- reg &= ~mask;
- __raw_writel(reg, &imx_ccm->CCGR2);
+ if (i2c_num < 3) {
+ mask = MXC_CCM_CCGR_CG_MASK
+ << (MXC_CCM_CCGR2_I2C1_SERIAL_OFFSET
+ + (i2c_num << 1));
+ reg = __raw_readl(&imx_ccm->CCGR2);
+ if (enable)
+ reg |= mask;
+ else
+ reg &= ~mask;
+ __raw_writel(reg, &imx_ccm->CCGR2);
+ } else {
+ if (is_cpu_type(MXC_CPU_MX6SX) || is_cpu_type(MXC_CPU_MX6UL)) {
+ mask = MXC_CCM_CCGR6_I2C4_MASK;
+ addr = &imx_ccm->CCGR6;
+ } else {
+ mask = MXC_CCM_CCGR1_I2C4_SERIAL_MASK;
+ addr = &imx_ccm->CCGR1;
+ }
+ reg = __raw_readl(addr);
+ if (enable)
+ reg |= mask;
+ else
+ reg &= ~mask;
+ __raw_writel(reg, addr);
+ }
return 0;
}
#endif
__raw_writel(reg, &imx_ccm->CCGR1);
return 0;
}
+
static u32 decode_pll(enum pll_clocks pll, u32 infreq)
{
- u32 div;
+ u32 div, post_div;
+ u32 pll_num, pll_denom;
+ u64 freq;
switch (pll) {
- case PLL_SYS:
- div = __raw_readl(&imx_ccm->analog_pll_sys);
- div &= BM_ANADIG_PLL_SYS_DIV_SELECT;
-
- return (infreq * div) >> 1;
- case PLL_BUS:
- div = __raw_readl(&imx_ccm->analog_pll_528);
+ case PLL_ARM:
+ div = __raw_readl(&anatop->pll_arm);
+ if (div & BM_ANADIG_PLL_ARM_BYPASS)
+ /* Assume the bypass clock is always derived from OSC */
+ return infreq;
+ div &= BM_ANADIG_PLL_ARM_DIV_SELECT;
+
+ return infreq * div / 2;
+ case PLL_528:
+ div = __raw_readl(&anatop->pll_528);
+ if (div & BM_ANADIG_PLL_528_BYPASS)
+ return infreq;
div &= BM_ANADIG_PLL_528_DIV_SELECT;
- return infreq * (20 + (div << 1));
+ return infreq * (20 + div * 2);
case PLL_USBOTG:
- div = __raw_readl(&imx_ccm->analog_usb1_pll_480_ctrl);
+ div = __raw_readl(&anatop->usb1_pll_480_ctrl);
+ if (div & BM_ANADIG_USB1_PLL_480_CTRL_BYPASS)
+ return infreq;
div &= BM_ANADIG_USB1_PLL_480_CTRL_DIV_SELECT;
- return infreq * (20 + (div << 1));
+ return infreq * (20 + div * 2);
+ case PLL_AUDIO:
+ div = __raw_readl(&anatop->pll_audio);
+ /* BM_ANADIG_PLL_AUDIO_BYPASS_CLK_SRC is ignored */
+ if (div & BM_ANADIG_PLL_AUDIO_BYPASS)
+ return infreq;
+
+ pll_num = __raw_readl(&anatop->pll_audio_num);
+ pll_denom = __raw_readl(&anatop->pll_audio_denom);
+
+ post_div = (div & BM_ANADIG_PLL_AUDIO_POST_DIV_SELECT) >>
+ BP_ANADIG_PLL_AUDIO_POST_DIV_SELECT;
+ if (post_div == 3) {
+ printf("Invalid post divider value for PLL_AUDIO\n");
+ return 0;
+ }
+ post_div = 1 << (2 - post_div);
+ div &= BM_ANADIG_PLL_AUDIO_DIV_SELECT;
+
+ freq = (u64)infreq * pll_num / pll_denom;
+ freq += infreq * div;
+ return lldiv(freq, post_div);
+ case PLL_VIDEO:
+ div = __raw_readl(&anatop->pll_video);
+ /* BM_ANADIG_PLL_AUDIO_BYPASS_CLK_SRC is ignored */
+ if (div & BM_ANADIG_PLL_VIDEO_BYPASS)
+ return infreq;
+
+ pll_num = __raw_readl(&anatop->pll_video_num);
+ pll_denom = __raw_readl(&anatop->pll_video_denom);
+
+ post_div = (div & BM_ANADIG_PLL_VIDEO_POST_DIV_SELECT) >>
+ BP_ANADIG_PLL_VIDEO_POST_DIV_SELECT;
+ if (post_div == 3) {
+ printf("Invalid post divider value for PLL_VIDEO\n");
+ return 0;
+ }
+ post_div = 1 << (2 - post_div);
+ div &= BM_ANADIG_PLL_VIDEO_DIV_SELECT;
+
+ freq = (u64)infreq * pll_num / pll_denom;
+ freq += infreq * div;
+ return lldiv(freq, post_div);
case PLL_ENET:
- div = __raw_readl(&imx_ccm->analog_pll_enet);
+ div = __raw_readl(&anatop->pll_enet);
+ if (div & BM_ANADIG_PLL_ENET_BYPASS)
+ return infreq;
div &= BM_ANADIG_PLL_ENET_DIV_SELECT;
return 25000000 * (div + (div >> 1) + 1);
+ case PLL_USB2:
+ div = __raw_readl(&anatop->usb2_pll_480_ctrl);
+ if (div & BM_ANADIG_USB1_PLL_480_CTRL_BYPASS)
+ return infreq;
+ div &= BM_ANADIG_USB1_PLL_480_CTRL_DIV_SELECT;
+
+ return infreq * (20 + div * 2);
+ case PLL_MLB:
+ div = __raw_readl(&anatop->pll_mlb);
+ if (div & BM_ANADIG_PLL_MLB_BYPASS)
+ return infreq;
+ /* fallthru: unknown external clock provided on MLB_CLK pin */
default:
return 0;
}
/* NOTREACHED */
}
+
static u32 mxc_get_pll_pfd(enum pll_clocks pll, int pfd_num)
{
u32 div;
u64 freq;
switch (pll) {
- case PLL_BUS:
- if (pfd_num == 3) {
- /* No PFD3 on PPL2 */
- return 0;
+ case PLL_528:
+ if (!is_cpu_type(MXC_CPU_MX6UL)) {
+ if (pfd_num == 3) {
+ /* No PFD3 on PPL2 */
+ return 0;
+ }
}
- div = __raw_readl(&imx_ccm->analog_pfd_528);
- freq = (u64)decode_pll(PLL_BUS, MXC_HCLK);
+ div = __raw_readl(&anatop->pfd_528);
+ freq = (u64)decode_pll(PLL_528, MXC_HCLK);
break;
case PLL_USBOTG:
- div = __raw_readl(&imx_ccm->analog_pfd_480);
+ div = __raw_readl(&anatop->pfd_480);
freq = (u64)decode_pll(PLL_USBOTG, MXC_HCLK);
break;
default:
- /* No PFD on other PLL */
+ /* No PFD on other PLL */
return 0;
}
reg = __raw_readl(&imx_ccm->cacrr);
reg &= MXC_CCM_CACRR_ARM_PODF_MASK;
reg >>= MXC_CCM_CACRR_ARM_PODF_OFFSET;
- freq = decode_pll(PLL_SYS, MXC_HCLK);
+ freq = decode_pll(PLL_ARM, MXC_HCLK);
return freq / (reg + 1);
}
u32 get_periph_clk(void)
{
- u32 reg, freq = 0;
+ u32 reg, div = 0, freq = 0;
reg = __raw_readl(&imx_ccm->cbcdr);
if (reg & MXC_CCM_CBCDR_PERIPH_CLK_SEL) {
+ div = (reg & MXC_CCM_CBCDR_PERIPH_CLK2_PODF_MASK) >>
+ MXC_CCM_CBCDR_PERIPH_CLK2_PODF_OFFSET;
reg = __raw_readl(&imx_ccm->cbcmr);
reg &= MXC_CCM_CBCMR_PERIPH_CLK2_SEL_MASK;
reg >>= MXC_CCM_CBCMR_PERIPH_CLK2_SEL_OFFSET;
case 2:
freq = MXC_HCLK;
break;
- default:
- break;
}
} else {
reg = __raw_readl(&imx_ccm->cbcmr);
switch (reg) {
case 0:
- freq = decode_pll(PLL_BUS, MXC_HCLK);
+ freq = decode_pll(PLL_528, MXC_HCLK);
break;
case 1:
- freq = mxc_get_pll_pfd(PLL_BUS, 2);
+ freq = mxc_get_pll_pfd(PLL_528, 2);
break;
case 2:
- freq = mxc_get_pll_pfd(PLL_BUS, 0);
+ freq = mxc_get_pll_pfd(PLL_528, 0);
break;
case 3:
/* static / 2 divider */
- freq = mxc_get_pll_pfd(PLL_BUS, 2) / 2;
- break;
- default:
+ freq = mxc_get_pll_pfd(PLL_528, 2) / 2;
break;
}
}
- return freq;
+ return freq / (div + 1);
}
static u32 get_ipg_clk(void)
u32 reg, perclk_podf;
reg = __raw_readl(&imx_ccm->cscmr1);
-#if (defined(CONFIG_MX6SL) || defined(CONFIG_MX6SX))
- if (reg & MXC_CCM_CSCMR1_PER_CLK_SEL_MASK)
- return MXC_HCLK; /* OSC 24Mhz */
-#endif
+ if (is_cpu_type(MXC_CPU_MX6SL) || is_cpu_type(MXC_CPU_MX6SX) ||
+ is_mx6dqp() || is_cpu_type(MXC_CPU_MX6UL)) {
+ if (reg & MXC_CCM_CSCMR1_PER_CLK_SEL_MASK)
+ return MXC_HCLK; /* OSC 24Mhz */
+ }
+
perclk_podf = reg & MXC_CCM_CSCMR1_PERCLK_PODF_MASK;
return get_ipg_clk() / (perclk_podf + 1);
u32 reg, uart_podf;
u32 freq = decode_pll(PLL_USBOTG, MXC_HCLK) / 6; /* static divider */
reg = __raw_readl(&imx_ccm->cscdr1);
-#if (defined(CONFIG_MX6SL) || defined(CONFIG_MX6SX))
- if (reg & MXC_CCM_CSCDR1_UART_CLK_SEL)
- freq = MXC_HCLK;
-#endif
+
+ if (is_cpu_type(MXC_CPU_MX6SL) || is_cpu_type(MXC_CPU_MX6SX) ||
+ is_mx6dqp() || is_cpu_type(MXC_CPU_MX6UL)) {
+ if (reg & MXC_CCM_CSCDR1_UART_CLK_SEL)
+ freq = MXC_HCLK;
+ }
+
reg &= MXC_CCM_CSCDR1_UART_CLK_PODF_MASK;
uart_podf = reg >> MXC_CCM_CSCDR1_UART_CLK_PODF_OFFSET;
u32 reg, cspi_podf;
reg = __raw_readl(&imx_ccm->cscdr2);
- reg &= MXC_CCM_CSCDR2_ECSPI_CLK_PODF_MASK;
- cspi_podf = reg >> MXC_CCM_CSCDR2_ECSPI_CLK_PODF_OFFSET;
+ cspi_podf = (reg & MXC_CCM_CSCDR2_ECSPI_CLK_PODF_MASK) >>
+ MXC_CCM_CSCDR2_ECSPI_CLK_PODF_OFFSET;
+
+ if (is_mx6dqp() || is_cpu_type(MXC_CPU_MX6SL) ||
+ is_cpu_type(MXC_CPU_MX6SX) || is_cpu_type(MXC_CPU_MX6UL)) {
+ if (reg & MXC_CCM_CSCDR2_ECSPI_CLK_SEL_MASK)
+ return MXC_HCLK / (cspi_podf + 1);
+ }
return decode_pll(PLL_USBOTG, MXC_HCLK) / (8 * (cspi_podf + 1));
}
static u32 get_axi_clk(void)
{
u32 root_freq, axi_podf;
- u32 cbcdr = __raw_readl(&imx_ccm->cbcdr);
+ u32 cbcdr = __raw_readl(&imx_ccm->cbcdr);
axi_podf = cbcdr & MXC_CCM_CBCDR_AXI_PODF_MASK;
axi_podf >>= MXC_CCM_CBCDR_AXI_PODF_OFFSET;
if (cbcdr & MXC_CCM_CBCDR_AXI_SEL) {
if (cbcdr & MXC_CCM_CBCDR_AXI_ALT_SEL)
- root_freq = mxc_get_pll_pfd(PLL_BUS, 2);
+ root_freq = mxc_get_pll_pfd(PLL_528, 2);
else
root_freq = mxc_get_pll_pfd(PLL_USBOTG, 1);
- } else
+ } else {
root_freq = get_periph_clk();
-
+ }
return root_freq / (axi_podf + 1);
}
root_freq = decode_pll(PLL_USBOTG, MXC_HCLK);
break;
case 2:
- root_freq = mxc_get_pll_pfd(PLL_BUS, 2);
+ root_freq = mxc_get_pll_pfd(PLL_528, 2);
break;
case 3:
- root_freq = mxc_get_pll_pfd(PLL_BUS, 0);
+ root_freq = mxc_get_pll_pfd(PLL_528, 0);
break;
}
return root_freq / (emi_slow_podf + 1);
}
-#if (defined(CONFIG_MX6SL) || defined(CONFIG_MX6SX))
-static u32 get_mmdc_ch0_clk(void)
+static u32 get_nfc_clk(void)
{
- u32 cbcmr = __raw_readl(&imx_ccm->cbcmr);
- u32 cbcdr = __raw_readl(&imx_ccm->cbcdr);
- u32 freq, podf;
-
- podf = (cbcdr & MXC_CCM_CBCDR_MMDC_CH1_PODF_MASK) \
- >> MXC_CCM_CBCDR_MMDC_CH1_PODF_OFFSET;
-
- switch ((cbcmr & MXC_CCM_CBCMR_PRE_PERIPH2_CLK_SEL_MASK) >>
- MXC_CCM_CBCMR_PRE_PERIPH2_CLK_SEL_OFFSET) {
+ u32 cs2cdr = __raw_readl(&imx_ccm->cs2cdr);
+ u32 podf = (cs2cdr & MXC_CCM_CS2CDR_ENFC_CLK_PODF_MASK) >>
+ MXC_CCM_CS2CDR_ENFC_CLK_PODF_OFFSET;
+ u32 pred = (cs2cdr & MXC_CCM_CS2CDR_ENFC_CLK_PRED_MASK) >>
+ MXC_CCM_CS2CDR_ENFC_CLK_PRED_OFFSET;
+ int nfc_clk_sel = (cs2cdr & MXC_CCM_CS2CDR_ENFC_CLK_SEL_MASK) >>
+ MXC_CCM_CS2CDR_ENFC_CLK_SEL_OFFSET;
+ u32 root_freq;
+
+ switch (nfc_clk_sel) {
case 0:
- freq = decode_pll(PLL_BUS, MXC_HCLK);
+ root_freq = mxc_get_pll_pfd(PLL_528, 0);
break;
case 1:
- freq = mxc_get_pll_pfd(PLL_BUS, 2);
+ root_freq = decode_pll(PLL_528, MXC_HCLK);
break;
case 2:
- freq = mxc_get_pll_pfd(PLL_BUS, 0);
+ root_freq = decode_pll(PLL_USBOTG, MXC_HCLK);
break;
case 3:
- /* static / 2 divider */
- freq = mxc_get_pll_pfd(PLL_BUS, 2) / 2;
+ root_freq = mxc_get_pll_pfd(PLL_528, 2);
+ break;
+ case 4:
+ root_freq = mxc_get_pll_pfd(PLL_USBOTG, 3);
+ break;
+ default:
+ return 0;
}
- return freq / (podf + 1);
+ return root_freq / (pred + 1) / (podf + 1);
+}
+
+#define CS2CDR_ENFC_MASK (MXC_CCM_CS2CDR_ENFC_CLK_PODF_MASK | \
+ MXC_CCM_CS2CDR_ENFC_CLK_PRED_MASK | \
+ MXC_CCM_CS2CDR_ENFC_CLK_SEL_MASK)
+static int set_nfc_clk(u32 ref, u32 freq_khz)
+{
+ u32 cs2cdr = __raw_readl(&imx_ccm->cs2cdr);
+ u32 podf;
+ u32 pred;
+ int nfc_clk_sel;
+ u32 root_freq;
+ u32 min_err = ~0;
+ u32 nfc_val = ~0;
+ u32 freq = freq_khz * 1000;
+
+ for (nfc_clk_sel = 0; nfc_clk_sel < 4; nfc_clk_sel++) {
+ u32 act_freq;
+ u32 err;
+
+ if (ref < 4 && ref != nfc_clk_sel)
+ continue;
+
+ switch (nfc_clk_sel) {
+ case 0:
+ root_freq = mxc_get_pll_pfd(PLL_528, 0);
+ break;
+ case 1:
+ root_freq = decode_pll(PLL_528, MXC_HCLK);
+ break;
+ case 2:
+ root_freq = decode_pll(PLL_USBOTG, MXC_HCLK);
+ break;
+ case 3:
+ root_freq = mxc_get_pll_pfd(PLL_528, 2);
+ break;
+ }
+ if (root_freq < freq)
+ continue;
+
+ podf = min(DIV_ROUND_UP(root_freq, freq), 1U << 6);
+ pred = min(DIV_ROUND_UP(root_freq / podf, freq), 8U);
+ act_freq = root_freq / pred / podf;
+ err = (freq - act_freq) * 100 / freq;
+ debug("root=%d[%u] freq=%u pred=%u podf=%u act=%u err=%d\n",
+ nfc_clk_sel, root_freq, freq, pred, podf, act_freq, err);
+ if (act_freq > freq)
+ continue;
+ if (err < min_err) {
+ nfc_val = (podf - 1) << MXC_CCM_CS2CDR_ENFC_CLK_PODF_OFFSET;
+ nfc_val |= (pred - 1) << MXC_CCM_CS2CDR_ENFC_CLK_PRED_OFFSET;
+ nfc_val |= nfc_clk_sel << MXC_CCM_CS2CDR_ENFC_CLK_SEL_OFFSET;
+ min_err = err;
+ if (err == 0)
+ break;
+ }
+ }
+
+ if (nfc_val == ~0 || min_err > 10)
+ return -EINVAL;
+
+ if ((cs2cdr & CS2CDR_ENFC_MASK) != nfc_val) {
+ debug("changing cs2cdr from %08x to %08x\n", cs2cdr,
+ (cs2cdr & ~CS2CDR_ENFC_MASK) | nfc_val);
+ __raw_writel((cs2cdr & ~CS2CDR_ENFC_MASK) | nfc_val,
+ &imx_ccm->cs2cdr);
+ } else {
+ debug("Leaving cs2cdr unchanged [%08x]\n", cs2cdr);
+ }
+ return 0;
}
-#else
+
static u32 get_mmdc_ch0_clk(void)
{
+ u32 cbcmr = __raw_readl(&imx_ccm->cbcmr);
u32 cbcdr = __raw_readl(&imx_ccm->cbcdr);
- u32 mmdc_ch0_podf = (cbcdr & MXC_CCM_CBCDR_MMDC_CH0_PODF_MASK) >>
- MXC_CCM_CBCDR_MMDC_CH0_PODF_OFFSET;
- return get_periph_clk() / (mmdc_ch0_podf + 1);
+ u32 freq, podf, per2_clk2_podf;
+
+ if (is_cpu_type(MXC_CPU_MX6SX) || is_cpu_type(MXC_CPU_MX6UL) ||
+ is_cpu_type(MXC_CPU_MX6SL)) {
+ podf = (cbcdr & MXC_CCM_CBCDR_MMDC_CH1_PODF_MASK) >>
+ MXC_CCM_CBCDR_MMDC_CH1_PODF_OFFSET;
+ if (cbcdr & MXC_CCM_CBCDR_PERIPH2_CLK_SEL) {
+ per2_clk2_podf = (cbcdr & MXC_CCM_CBCDR_PERIPH2_CLK2_PODF_MASK) >>
+ MXC_CCM_CBCDR_PERIPH2_CLK2_PODF_OFFSET;
+ if (is_cpu_type(MXC_CPU_MX6SL)) {
+ if (cbcmr & MXC_CCM_CBCMR_PERIPH2_CLK2_SEL)
+ freq = MXC_HCLK;
+ else
+ freq = decode_pll(PLL_USBOTG, MXC_HCLK);
+ } else {
+ if (cbcmr & MXC_CCM_CBCMR_PERIPH2_CLK2_SEL)
+ freq = decode_pll(PLL_528, MXC_HCLK);
+ else
+ freq = decode_pll(PLL_USBOTG, MXC_HCLK);
+ }
+ } else {
+ per2_clk2_podf = 0;
+ switch ((cbcmr &
+ MXC_CCM_CBCMR_PRE_PERIPH2_CLK_SEL_MASK) >>
+ MXC_CCM_CBCMR_PRE_PERIPH2_CLK_SEL_OFFSET) {
+ case 0:
+ freq = decode_pll(PLL_528, MXC_HCLK);
+ break;
+ case 1:
+ freq = mxc_get_pll_pfd(PLL_528, 2);
+ break;
+ case 2:
+ freq = mxc_get_pll_pfd(PLL_528, 0);
+ break;
+ case 3:
+ /* static / 2 divider */
+ freq = mxc_get_pll_pfd(PLL_528, 2) / 2;
+ break;
+ }
+ }
+ return freq / (podf + 1) / (per2_clk2_podf + 1);
+ } else {
+ podf = (cbcdr & MXC_CCM_CBCDR_MMDC_CH0_PODF_MASK) >>
+ MXC_CCM_CBCDR_MMDC_CH0_PODF_OFFSET;
+ return get_periph_clk() / (podf + 1);
+ }
+}
+
+#ifdef CONFIG_FSL_QSPI
+/* qspi_num can be from 0 - 1 */
+void enable_qspi_clk(int qspi_num)
+{
+ u32 reg = 0;
+ /* Enable QuadSPI clock */
+ switch (qspi_num) {
+ case 0:
+ /* disable the clock gate */
+ clrbits_le32(&imx_ccm->CCGR3, MXC_CCM_CCGR3_QSPI1_MASK);
+
+ /* set 50M : (50 = 396 / 2 / 4) */
+ reg = readl(&imx_ccm->cscmr1);
+ reg &= ~(MXC_CCM_CSCMR1_QSPI1_PODF_MASK |
+ MXC_CCM_CSCMR1_QSPI1_CLK_SEL_MASK);
+ reg |= ((1 << MXC_CCM_CSCMR1_QSPI1_PODF_OFFSET) |
+ (2 << MXC_CCM_CSCMR1_QSPI1_CLK_SEL_OFFSET));
+ writel(reg, &imx_ccm->cscmr1);
+
+ /* enable the clock gate */
+ setbits_le32(&imx_ccm->CCGR3, MXC_CCM_CCGR3_QSPI1_MASK);
+ break;
+ case 1:
+ /*
+ * disable the clock gate
+ * QSPI2 and GPMI_BCH_INPUT_GPMI_IO share the same clock gate,
+ * disable both of them.
+ */
+ clrbits_le32(&imx_ccm->CCGR4, MXC_CCM_CCGR4_QSPI2_ENFC_MASK |
+ MXC_CCM_CCGR4_RAWNAND_U_GPMI_BCH_INPUT_GPMI_IO_MASK);
+
+ /* set 50M : (50 = 396 / 2 / 4) */
+ reg = readl(&imx_ccm->cs2cdr);
+ reg &= ~(MXC_CCM_CS2CDR_QSPI2_CLK_PODF_MASK |
+ MXC_CCM_CS2CDR_QSPI2_CLK_PRED_MASK |
+ MXC_CCM_CS2CDR_QSPI2_CLK_SEL_MASK);
+ reg |= (MXC_CCM_CS2CDR_QSPI2_CLK_PRED(0x1) |
+ MXC_CCM_CS2CDR_QSPI2_CLK_SEL(0x3));
+ writel(reg, &imx_ccm->cs2cdr);
+
+ /*enable the clock gate*/
+ setbits_le32(&imx_ccm->CCGR4, MXC_CCM_CCGR4_QSPI2_ENFC_MASK |
+ MXC_CCM_CCGR4_RAWNAND_U_GPMI_BCH_INPUT_GPMI_IO_MASK);
+ break;
+ default:
+ break;
+ }
}
#endif
u32 reg = 0;
s32 timeout = 100000;
- struct anatop_regs __iomem *anatop =
- (struct anatop_regs __iomem *)ANATOP_BASE_ADDR;
-
- if (freq < ENET_25MHz || freq > ENET_125MHz)
+ if (freq < ENET_25MHZ || freq > ENET_125MHZ)
return -EINVAL;
reg = readl(&anatop->pll_enet);
reg &= ~BM_ANADIG_PLL_ENET_BYPASS;
writel(reg, &anatop->pll_enet);
-#ifdef CONFIG_MX6SX
+#ifdef CONFIG_SOC_MX6SX
/*
* Set enet ahb clock to 200MHz
* pll2_pfd2_396m-> ENET_PODF-> ENET_AHB
}
if (clk_sel)
- root_freq = mxc_get_pll_pfd(PLL_BUS, 0);
+ root_freq = mxc_get_pll_pfd(PLL_528, 0);
else
- root_freq = mxc_get_pll_pfd(PLL_BUS, 2);
+ root_freq = mxc_get_pll_pfd(PLL_528, 2);
return root_freq / (usdhc_podf + 1);
}
return mxc_get_clock(MXC_IPG_CLK);
}
+#if defined(CONFIG_CMD_SATA) || defined(CONFIG_PCIE_IMX)
static int enable_enet_pll(uint32_t en)
{
- struct mxc_ccm_reg *const imx_ccm
- = (struct mxc_ccm_reg *) CCM_BASE_ADDR;
+ u32 reg;
s32 timeout = 100000;
- u32 reg = 0;
/* Enable PLLs */
- reg = readl(&imx_ccm->analog_pll_enet);
- reg &= ~BM_ANADIG_PLL_SYS_POWERDOWN;
- writel(reg, &imx_ccm->analog_pll_enet);
- reg |= BM_ANADIG_PLL_SYS_ENABLE;
+ reg = readl(&anatop->pll_enet);
+ reg &= ~BM_ANADIG_PLL_ENET_POWERDOWN;
+ writel(reg, &anatop->pll_enet);
+ reg |= BM_ANADIG_PLL_ENET_ENABLE;
while (timeout--) {
- if (readl(&imx_ccm->analog_pll_enet) & BM_ANADIG_PLL_SYS_LOCK)
+ if (readl(&anatop->pll_enet) & BM_ANADIG_PLL_ENET_LOCK)
break;
}
if (timeout <= 0)
return -EIO;
- reg &= ~BM_ANADIG_PLL_SYS_BYPASS;
- writel(reg, &imx_ccm->analog_pll_enet);
+ reg &= ~BM_ANADIG_PLL_ENET_BYPASS;
+ writel(reg, &anatop->pll_enet);
reg |= en;
- writel(reg, &imx_ccm->analog_pll_enet);
+ writel(reg, &anatop->pll_enet);
return 0;
}
+#endif
-#ifndef CONFIG_MX6SX
+#ifdef CONFIG_CMD_SATA
static void ungate_sata_clock(void)
{
- struct mxc_ccm_reg *const imx_ccm =
- (struct mxc_ccm_reg *)CCM_BASE_ADDR;
-
/* Enable SATA clock. */
setbits_le32(&imx_ccm->CCGR5, MXC_CCM_CCGR5_SATA_MASK);
}
-#endif
-
-static void ungate_pcie_clock(void)
-{
- struct mxc_ccm_reg *const imx_ccm =
- (struct mxc_ccm_reg *)CCM_BASE_ADDR;
-
- /* Enable PCIe clock. */
- setbits_le32(&imx_ccm->CCGR4, MXC_CCM_CCGR4_PCIE_MASK);
-}
-#ifndef CONFIG_MX6SX
int enable_sata_clock(void)
{
ungate_sata_clock();
return enable_enet_pll(BM_ANADIG_PLL_ENET_ENABLE_SATA);
}
+
+void disable_sata_clock(void)
+{
+ clrbits_le32(&imx_ccm->CCGR5, MXC_CCM_CCGR5_SATA_MASK);
+}
#endif
+#ifdef CONFIG_PCIE_IMX
+static void ungate_pcie_clock(void)
+{
+ /* Enable PCIe clock. */
+ setbits_le32(&imx_ccm->CCGR4, MXC_CCM_CCGR4_PCIE_MASK);
+}
+
int enable_pcie_clock(void)
{
- struct anatop_regs *anatop_regs =
- (struct anatop_regs *)ANATOP_BASE_ADDR;
- struct mxc_ccm_reg *ccm_regs = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
u32 lvds1_clk_sel;
/*
clrbits_le32(&ccm_regs->cbcmr, MXC_CCM_CBCMR_PCIE_AXI_CLK_SEL);
/* Party time! Ungate the clock to the PCIe. */
-#ifndef CONFIG_MX6SX
+#ifdef CONFIG_CMD_SATA
ungate_sata_clock();
#endif
ungate_pcie_clock();
return enable_enet_pll(BM_ANADIG_PLL_ENET_ENABLE_SATA |
BM_ANADIG_PLL_ENET_ENABLE_PCIE);
}
+#endif
#ifdef CONFIG_SECURE_BOOT
void hab_caam_clock_enable(unsigned char enable)
}
#endif
+static void enable_pll3(void)
+{
+ /* make sure pll3 is enabled */
+ if ((readl(&anatop->usb1_pll_480_ctrl) &
+ BM_ANADIG_USB1_PLL_480_CTRL_LOCK) == 0) {
+ /* enable pll's power */
+ writel(BM_ANADIG_USB1_PLL_480_CTRL_POWER,
+ &anatop->usb1_pll_480_ctrl_set);
+ writel(0x80, &anatop->ana_misc2_clr);
+ /* wait for pll lock */
+ while ((readl(&anatop->usb1_pll_480_ctrl) &
+ BM_ANADIG_USB1_PLL_480_CTRL_LOCK) == 0)
+ ;
+ /* disable bypass */
+ writel(BM_ANADIG_USB1_PLL_480_CTRL_BYPASS,
+ &anatop->usb1_pll_480_ctrl_clr);
+ /* enable pll output */
+ writel(BM_ANADIG_USB1_PLL_480_CTRL_ENABLE,
+ &anatop->usb1_pll_480_ctrl_set);
+ }
+}
+
+void enable_thermal_clk(void)
+{
+ enable_pll3();
+}
+
+void ipu_clk_enable(void)
+{
+ u32 reg = readl(&imx_ccm->CCGR3);
+ reg |= MXC_CCM_CCGR3_IPU1_IPU_MASK;
+ writel(reg, &imx_ccm->CCGR3);
+}
+
+void ipu_clk_disable(void)
+{
+ u32 reg = readl(&imx_ccm->CCGR3);
+ reg &= ~MXC_CCM_CCGR3_IPU1_IPU_MASK;
+ writel(reg, &imx_ccm->CCGR3);
+}
+
+void ipu_di_clk_enable(int di)
+{
+ switch (di) {
+ case 0:
+ setbits_le32(&imx_ccm->CCGR3,
+ MXC_CCM_CCGR3_IPU1_IPU_DI0_MASK);
+ break;
+ case 1:
+ setbits_le32(&imx_ccm->CCGR3,
+ MXC_CCM_CCGR3_IPU1_IPU_DI1_MASK);
+ break;
+ default:
+ printf("%s: Invalid DI index %d\n", __func__, di);
+ }
+}
+
+void ipu_di_clk_disable(int di)
+{
+ switch (di) {
+ case 0:
+ clrbits_le32(&imx_ccm->CCGR3,
+ MXC_CCM_CCGR3_IPU1_IPU_DI0_MASK);
+ break;
+ case 1:
+ clrbits_le32(&imx_ccm->CCGR3,
+ MXC_CCM_CCGR3_IPU1_IPU_DI1_MASK);
+ break;
+ default:
+ printf("%s: Invalid DI index %d\n", __func__, di);
+ }
+}
+
+void ldb_clk_enable(int ldb)
+{
+ switch (ldb) {
+ case 0:
+ setbits_le32(&imx_ccm->CCGR3,
+ MXC_CCM_CCGR3_LDB_DI0_MASK);
+ break;
+ case 1:
+ setbits_le32(&imx_ccm->CCGR3,
+ MXC_CCM_CCGR3_LDB_DI1_MASK);
+ break;
+ default:
+ printf("%s: Invalid LDB index %d\n", __func__, ldb);
+ }
+}
+
+void ldb_clk_disable(int ldb)
+{
+ switch (ldb) {
+ case 0:
+ clrbits_le32(&imx_ccm->CCGR3,
+ MXC_CCM_CCGR3_LDB_DI0_MASK);
+ break;
+ case 1:
+ clrbits_le32(&imx_ccm->CCGR3,
+ MXC_CCM_CCGR3_LDB_DI1_MASK);
+ break;
+ default:
+ printf("%s: Invalid LDB index %d\n", __func__, ldb);
+ }
+}
+
+#ifdef CONFIG_VIDEO_MXS
+void lcdif_clk_enable(void)
+{
+ setbits_le32(&imx_ccm->CCGR3, MXC_CCM_CCGR3_LCDIF_MASK);
+ setbits_le32(&imx_ccm->CCGR2, MXC_CCM_CCGR2_LCD_MASK);
+}
+
+void lcdif_clk_disable(void)
+{
+ clrbits_le32(&imx_ccm->CCGR2, MXC_CCM_CCGR2_LCD_MASK);
+ clrbits_le32(&imx_ccm->CCGR3, MXC_CCM_CCGR3_LCDIF_MASK);
+}
+
+#define CBCMR_LCDIF_MASK MXC_CCM_CBCMR_LCDIF_PODF_MASK
+#define CSCDR2_LCDIF_MASK (MXC_CCM_CSCDR2_LCDIF_PRED_MASK | \
+ MXC_CCM_CSCDR2_LCDIF_CLK_SEL_MASK)
+
+static u32 get_lcdif_root_clk(u32 cscdr2)
+{
+ int lcdif_pre_clk_sel = (cscdr2 & MXC_CCM_CSCDR2_LCDIF_PRE_CLK_SEL_MASK) >>
+ MXC_CCM_CSCDR2_LCDIF_PRE_CLK_SEL_OFFSET;
+ int lcdif_clk_sel = (cscdr2 & MXC_CCM_CSCDR2_LCDIF_CLK_SEL_MASK) >>
+ MXC_CCM_CSCDR2_LCDIF_CLK_SEL_OFFSET;
+ u32 root_freq;
+
+ switch (lcdif_clk_sel) {
+ case 0:
+ switch (lcdif_pre_clk_sel) {
+ case 0:
+ root_freq = decode_pll(PLL_528, MXC_HCLK);
+ break;
+ case 1:
+ root_freq = mxc_get_pll_pfd(PLL_USBOTG, 3);
+ break;
+ case 2:
+ root_freq = decode_pll(PLL_VIDEO, MXC_HCLK);
+ break;
+ case 3:
+ root_freq = mxc_get_pll_pfd(PLL_528, 0);
+ break;
+ case 4:
+ root_freq = mxc_get_pll_pfd(PLL_528, 1);
+ break;
+ case 5:
+ root_freq = mxc_get_pll_pfd(PLL_USBOTG, 1);
+ break;
+ default:
+ return 0;
+ }
+ break;
+ case 1:
+ root_freq = mxc_get_pll_pfd(PLL_VIDEO, 0);
+ break;
+ case 2:
+ root_freq = decode_pll(PLL_USBOTG, MXC_HCLK);
+ break;
+ case 3:
+ root_freq = mxc_get_pll_pfd(PLL_528, 2);
+ break;
+ default:
+ return 0;
+ }
+
+ return root_freq;
+}
+
+static int set_lcdif_pll(u32 ref, u32 freq_khz,
+ unsigned post_div)
+{
+ int ret;
+ u64 freq = freq_khz * 1000;
+ u32 post_div_mask = 1 << (2 - post_div);
+ int mul = 1;
+ u32 min_err = ~0;
+ u32 reg;
+ int num = 0;
+ int denom = 1;
+ const int min_div = 27;
+ const int max_div = 54;
+ const int div_mask = 0x7f;
+ const u32 max_freq = ref * max_div / post_div;
+ const u32 min_freq = ref * min_div / post_div;
+
+ if (freq > max_freq || freq < min_freq) {
+ printf("Frequency %u.%03uMHz is out of range: %u.%03u..%u.%03uMHz\n",
+ freq_khz / 1000, freq_khz % 1000,
+ min_freq / 1000000, min_freq / 1000 % 1000,
+ max_freq / 1000000, max_freq / 1000 % 1000);
+ return -EINVAL;
+ }
+ {
+ int d = post_div;
+ int m = lldiv(freq * d + ref - 1, ref);
+ u32 err;
+ u32 f;
+
+ debug("%s@%d: d=%d m=%d max_div=%u min_div=%u\n", __func__, __LINE__,
+ d, m, max_div, min_div);
+ if (m > max_div || m < min_div)
+ return -EINVAL;
+
+ f = ref * m / d;
+ if (f > freq) {
+ debug("%s@%d: d=%d m=%d f=%u freq=%llu\n", __func__, __LINE__,
+ d, m, f, freq);
+ return -EINVAL;
+ }
+ err = freq - f;
+ debug("%s@%d: d=%d m=%d f=%u freq=%llu err=%d\n", __func__, __LINE__,
+ d, m, f, freq, err);
+ if (err < min_err) {
+ mul = m;
+ min_err = err;
+ }
+ }
+ if (min_err == ~0) {
+ printf("Cannot set VIDEO PLL to %u.%03uMHz\n",
+ freq_khz / 1000, freq_khz % 1000);
+ return -EINVAL;
+ }
+
+ debug("Setting M=%3u D=%u N=%d DE=%u for %u.%03uMHz (actual: %u.%03uMHz)\n",
+ mul, post_div, num, denom,
+ freq_khz / post_div / 1000, freq_khz / post_div % 1000,
+ ref * mul / post_div / 1000000,
+ ref * mul / post_div / 1000 % 1000);
+
+ reg = readl(&anatop->pll_video);
+ setbits_le32(&anatop->pll_video, BM_ANADIG_PLL_VIDEO_BYPASS);
+
+ reg = (reg & ~(div_mask |
+ BM_ANADIG_PLL_VIDEO_POST_DIV_SELECT)) |
+ mul | (post_div_mask << BP_ANADIG_PLL_VIDEO_POST_DIV_SELECT);
+ writel(reg, &anatop->pll_video);
+
+ ret = wait_pll_lock(&anatop->pll_video);
+ if (ret) {
+ printf("Video PLL failed to lock\n");
+ return ret;
+ }
+
+ clrbits_le32(&anatop->pll_video, BM_ANADIG_PLL_VIDEO_BYPASS);
+ return 0;
+}
+
+static int set_lcdif_clk(u32 ref, u32 freq_khz)
+{
+ u32 cbcmr = __raw_readl(&imx_ccm->cbcmr);
+ u32 cscdr2 = __raw_readl(&imx_ccm->cscdr2);
+ u32 cbcmr_val;
+ u32 cscdr2_val;
+ u32 freq = freq_khz * 1000;
+ u32 act_freq;
+ u32 err;
+ u32 min_div = 27;
+ u32 max_div = 54;
+ u32 min_pll_khz = ref * min_div / 4 / 1000;
+ u32 max_pll_khz = ref * max_div / 1000;
+ u32 pll_khz;
+ u32 post_div = 0;
+ u32 m;
+ u32 min_err = ~0;
+ u32 best_m = 0;
+ u32 best_pred = 1;
+ u32 best_podf = 1;
+ u32 div;
+ unsigned pd;
+
+ if (freq_khz > max_pll_khz)
+ return -EINVAL;
+
+ for (pd = 1; min_err && pd <= 4; pd <<= 1) {
+ for (m = max(min_div, DIV_ROUND_UP(648000 / pd, freq_khz * 64));
+ m <= max_div; m++) {
+ u32 err;
+ int pred = 0;
+ int podf = 0;
+ u32 root_freq = ref * m / pd;
+
+ div = DIV_ROUND_UP(root_freq, freq);
+
+ while (pred * podf == 0 && div <= 64) {
+ int p1, p2;
+
+ for (p1 = 1; p1 <= 8; p1++) {
+ for (p2 = 1; p2 <= 8; p2++) {
+ if (p1 * p2 == div) {
+ podf = p1;
+ pred = p2;
+ break;
+ }
+ }
+ }
+ if (pred * podf == 0) {
+ div++;
+ }
+ }
+ if (pred * podf == 0)
+ continue;
+
+ /* relative error in per mille */
+ act_freq = root_freq / div;
+ err = abs(act_freq - freq) / freq_khz;
+
+ if (err < min_err) {
+ best_m = m;
+ best_pred = pred;
+ best_podf = podf;
+ post_div = pd;
+ min_err = err;
+ if (err <= 10)
+ break;
+ }
+ }
+ }
+ if (min_err > 50)
+ return -EINVAL;
+
+ pll_khz = ref / 1000 * best_m;
+ if (pll_khz > max_pll_khz)
+ return -EINVAL;
+
+ if (pll_khz < min_pll_khz)
+ return -EINVAL;
+
+ err = set_lcdif_pll(ref, pll_khz / post_div, post_div);
+ if (err)
+ return err;
+
+ cbcmr_val = (best_podf - 1) << MXC_CCM_CBCMR_LCDIF_PODF_OFFSET;
+ cscdr2_val = (best_pred - 1) << MXC_CCM_CSCDR2_LCDIF_PRED_OFFSET;
+
+ if ((cbcmr & CBCMR_LCDIF_MASK) != cbcmr_val) {
+ debug("changing cbcmr from %08x to %08x\n", cbcmr,
+ (cbcmr & ~CBCMR_LCDIF_MASK) | cbcmr_val);
+ clrsetbits_le32(&imx_ccm->cbcmr,
+ CBCMR_LCDIF_MASK,
+ cbcmr_val);
+ } else {
+ debug("Leaving cbcmr unchanged [%08x]\n", cbcmr);
+ }
+ if ((cscdr2 & CSCDR2_LCDIF_MASK) != cscdr2_val) {
+ debug("changing cscdr2 from %08x to %08x\n", cscdr2,
+ (cscdr2 & ~CSCDR2_LCDIF_MASK) | cscdr2_val);
+ clrsetbits_le32(&imx_ccm->cscdr2,
+ CSCDR2_LCDIF_MASK,
+ cscdr2_val);
+ } else {
+ debug("Leaving cscdr2 unchanged [%08x]\n", cscdr2);
+ }
+ return 0;
+}
+
+void mxs_set_lcdclk(u32 khz)
+{
+ set_lcdif_clk(CONFIG_SYS_MX6_HCLK, khz);
+}
+
+static u32 get_lcdif_clk(void)
+{
+ u32 cbcmr = __raw_readl(&imx_ccm->cbcmr);
+ u32 podf = ((cbcmr & MXC_CCM_CBCMR_LCDIF_PODF_MASK) >>
+ MXC_CCM_CBCMR_LCDIF_PODF_OFFSET) + 1;
+ u32 cscdr2 = __raw_readl(&imx_ccm->cscdr2);
+ u32 pred = ((cscdr2 & MXC_CCM_CSCDR2_LCDIF_PRED_MASK) >>
+ MXC_CCM_CSCDR2_LCDIF_PRED_OFFSET) + 1;
+ u32 root_freq = get_lcdif_root_clk(cscdr2);
+
+ return root_freq / pred / podf;
+}
+#endif
+
unsigned int mxc_get_clock(enum mxc_clock clk)
{
switch (clk) {
return get_usdhc_clk(3);
case MXC_SATA_CLK:
return get_ahb_clk();
+ case MXC_NFC_CLK:
+ return get_nfc_clk();
+#ifdef CONFIG_VIDEO_MXS
+ case MXC_LCDIF_CLK:
+ return get_lcdif_clk();
+#endif
default:
+ printf("Unsupported MXC CLK: %d\n", clk);
+ }
+
+ return 0;
+}
+
+/* Config CPU clock */
+static int set_arm_clk(u32 ref, u32 freq_khz)
+{
+ int ret;
+ int d;
+ int div = 0;
+ int mul = 0;
+ u32 min_err = ~0;
+ u32 reg;
+ const int min_div = 54;
+ const int max_div = 108;
+ const int div_mask = 0x7f;
+ const u32 max_freq = ref * max_div / 2;
+ const u32 min_freq = ref * min_div / 8 / 2;
+
+ if (freq_khz > max_freq / 1000 || freq_khz < min_freq / 1000) {
+ printf("Frequency %u.%03uMHz is out of range: %u.%03u..%u.%03u\n",
+ freq_khz / 1000, freq_khz % 1000,
+ min_freq / 1000000, min_freq / 1000 % 1000,
+ max_freq / 1000000, max_freq / 1000 % 1000);
+ return -EINVAL;
+ }
+
+ for (d = DIV_ROUND_UP(648000, freq_khz); d <= 8; d++) {
+ int m = freq_khz * 2 * d / (ref / 1000);
+ u32 f;
+ u32 err;
+
+ if (m > max_div) {
+ debug("%s@%d: d=%d m=%d\n", __func__, __LINE__,
+ d, m);
+ break;
+ }
+
+ f = ref * m / d / 2;
+ if (f > freq_khz * 1000) {
+ debug("%s@%d: d=%d m=%d f=%u freq=%u\n", __func__, __LINE__,
+ d, m, f, freq_khz);
+ if (--m < min_div)
+ return -EINVAL;
+ f = ref * m / d / 2;
+ }
+ err = freq_khz * 1000 - f;
+ debug("%s@%d: d=%d m=%d f=%u freq=%u err=%d\n", __func__, __LINE__,
+ d, m, f, freq_khz, err);
+ if (err < min_err) {
+ mul = m;
+ div = d;
+ min_err = err;
+ if (err == 0)
+ break;
+ }
+ }
+ if (min_err == ~0)
+ return -EINVAL;
+ debug("Setting M=%3u D=%2u for %u.%03uMHz (actual: %u.%03uMHz)\n",
+ mul, div, freq_khz / 1000, freq_khz % 1000,
+ ref * mul / 2 / div / 1000000, ref * mul / 2 / div / 1000 % 1000);
+
+ reg = readl(&anatop->pll_arm);
+ setbits_le32(&anatop->pll_video, BM_ANADIG_PLL_ARM_BYPASS);
+
+ reg = (reg & ~div_mask) | mul;
+ writel(reg, &anatop->pll_arm);
+
+ writel(div - 1, &imx_ccm->cacrr);
+
+ ret = wait_pll_lock(&anatop->pll_video);
+ if (ret) {
+ printf("ARM PLL failed to lock\n");
+ return ret;
+ }
+
+ clrbits_le32(&anatop->pll_video, BM_ANADIG_PLL_ARM_BYPASS);
+
+ return 0;
+}
+
+/*
+ * This function assumes the expected core clock has to be changed by
+ * modifying the PLL. This is NOT true always but for most of the times,
+ * it is. So it assumes the PLL output freq is the same as the expected
+ * core clock (presc=1) unless the core clock is less than PLL_FREQ_MIN.
+ * In the latter case, it will try to increase the presc value until
+ * (presc*core_clk) is greater than PLL_FREQ_MIN. It then makes call to
+ * calc_pll_params() and obtains the values of PD, MFI,MFN, MFD based
+ * on the targeted PLL and reference input clock to the PLL. Lastly,
+ * it sets the register based on these values along with the dividers.
+ * Note 1) There is no value checking for the passed-in divider values
+ * so the caller has to make sure those values are sensible.
+ * 2) Also adjust the NFC divider such that the NFC clock doesn't
+ * exceed NFC_CLK_MAX.
+ */
+int mxc_set_clock(u32 ref, u32 freq, enum mxc_clock clk)
+{
+ int ret;
+
+ freq *= 1000;
+
+ switch (clk) {
+ case MXC_ARM_CLK:
+ ret = set_arm_clk(ref, freq);
+ break;
+
+ case MXC_NFC_CLK:
+ ret = set_nfc_clk(ref, freq);
break;
+
+ default:
+ printf("Warning: Unsupported or invalid clock type: %d\n",
+ clk);
+ return -EINVAL;
}
- return -1;
+ return ret;
}
/*
- * Dump some core clockes.
+ * Dump some core clocks.
*/
-int do_mx6_showclocks(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
-{
- u32 freq;
- freq = decode_pll(PLL_SYS, MXC_HCLK);
- printf("PLL_SYS %8d MHz\n", freq / 1000000);
- freq = decode_pll(PLL_BUS, MXC_HCLK);
- printf("PLL_BUS %8d MHz\n", freq / 1000000);
- freq = decode_pll(PLL_USBOTG, MXC_HCLK);
- printf("PLL_OTG %8d MHz\n", freq / 1000000);
- freq = decode_pll(PLL_ENET, MXC_HCLK);
- printf("PLL_NET %8d MHz\n", freq / 1000000);
+#define print_pll(pll) { \
+ u32 __pll = decode_pll(pll, MXC_HCLK); \
+ printf("%-12s %4d.%03d MHz\n", #pll, \
+ __pll / 1000000, __pll / 1000 % 1000); \
+ }
+
+#define MXC_IPG_PER_CLK MXC_IPG_PERCLK
+
+#define print_clk(clk) { \
+ u32 __clk = mxc_get_clock(MXC_##clk##_CLK); \
+ printf("%-12s %4d.%03d MHz\n", #clk, \
+ __clk / 1000000, __clk / 1000 % 1000); \
+ }
+
+#define print_pfd(pll, pfd) { \
+ u32 __pfd = readl(&anatop->pfd_##pll); \
+ if (__pfd & (0x80 << 8 * pfd)) { \
+ printf("PFD_%s[%d] OFF\n", #pll, pfd); \
+ } else { \
+ __pfd = (__pfd >> 8 * pfd) & 0x3f; \
+ printf("PFD_%s[%d] %4d.%03d MHz\n", #pll, pfd, \
+ pll * 18 / __pfd, \
+ pll * 18 * 1000 / __pfd % 1000); \
+ } \
+}
+static void do_mx6_showclocks(void)
+{
+ print_pll(PLL_ARM);
+ print_pll(PLL_528);
+ print_pll(PLL_USBOTG);
+ print_pll(PLL_AUDIO);
+ print_pll(PLL_VIDEO);
+ print_pll(PLL_ENET);
+ print_pll(PLL_USB2);
+ printf("\n");
+
+ print_pfd(480, 0);
+ print_pfd(480, 1);
+ print_pfd(480, 2);
+ print_pfd(480, 3);
+ print_pfd(528, 0);
+ print_pfd(528, 1);
+ print_pfd(528, 2);
printf("\n");
- printf("IPG %8d kHz\n", mxc_get_clock(MXC_IPG_CLK) / 1000);
- printf("UART %8d kHz\n", mxc_get_clock(MXC_UART_CLK) / 1000);
-#ifdef CONFIG_MXC_SPI
- printf("CSPI %8d kHz\n", mxc_get_clock(MXC_CSPI_CLK) / 1000);
+
+ print_clk(IPG);
+ print_clk(UART);
+ print_clk(CSPI);
+ print_clk(AHB);
+ print_clk(AXI);
+ print_clk(DDR);
+ print_clk(ESDHC);
+ print_clk(ESDHC2);
+ print_clk(ESDHC3);
+ print_clk(ESDHC4);
+ print_clk(EMI_SLOW);
+ print_clk(NFC);
+ print_clk(IPG_PER);
+ print_clk(ARM);
+#ifdef CONFIG_VIDEO_MXS
+ print_clk(LCDIF);
#endif
- printf("AHB %8d kHz\n", mxc_get_clock(MXC_AHB_CLK) / 1000);
- printf("AXI %8d kHz\n", mxc_get_clock(MXC_AXI_CLK) / 1000);
- printf("DDR %8d kHz\n", mxc_get_clock(MXC_DDR_CLK) / 1000);
- printf("USDHC1 %8d kHz\n", mxc_get_clock(MXC_ESDHC_CLK) / 1000);
- printf("USDHC2 %8d kHz\n", mxc_get_clock(MXC_ESDHC2_CLK) / 1000);
- printf("USDHC3 %8d kHz\n", mxc_get_clock(MXC_ESDHC3_CLK) / 1000);
- printf("USDHC4 %8d kHz\n", mxc_get_clock(MXC_ESDHC4_CLK) / 1000);
- printf("EMI SLOW %8d kHz\n", mxc_get_clock(MXC_EMI_SLOW_CLK) / 1000);
- printf("IPG PERCLK %8d kHz\n", mxc_get_clock(MXC_IPG_PERCLK) / 1000);
+}
- return 0;
+static struct clk_lookup {
+ const char *name;
+ unsigned int index;
+} mx6_clk_lookup[] = {
+ { "arm", MXC_ARM_CLK, },
+ { "nfc", MXC_NFC_CLK, },
+};
+
+int do_clocks(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
+{
+ int i;
+ unsigned long freq;
+ unsigned long ref = ~0UL;
+
+ if (argc < 2) {
+ do_mx6_showclocks();
+ return CMD_RET_SUCCESS;
+ } else if (argc == 2 || argc > 4) {
+ return CMD_RET_USAGE;
+ }
+
+ freq = simple_strtoul(argv[2], NULL, 0);
+ if (freq == 0) {
+ printf("Invalid clock frequency %lu\n", freq);
+ return CMD_RET_FAILURE;
+ }
+ if (argc > 3) {
+ ref = simple_strtoul(argv[3], NULL, 0);
+ }
+ for (i = 0; i < ARRAY_SIZE(mx6_clk_lookup); i++) {
+ if (strcasecmp(argv[1], mx6_clk_lookup[i].name) == 0) {
+ switch (mx6_clk_lookup[i].index) {
+ case MXC_ARM_CLK:
+ if (argc > 3)
+ return CMD_RET_USAGE;
+ ref = MXC_HCLK;
+ break;
+
+ case MXC_NFC_CLK:
+ if (argc > 3 && ref > 3) {
+ printf("Invalid clock selector value: %lu\n", ref);
+ return CMD_RET_FAILURE;
+ }
+ break;
+ }
+ printf("Setting %s clock to %lu MHz\n",
+ mx6_clk_lookup[i].name, freq);
+ if (mxc_set_clock(ref, freq, mx6_clk_lookup[i].index))
+ break;
+ freq = mxc_get_clock(mx6_clk_lookup[i].index);
+ printf("%s clock set to %lu.%03lu MHz\n",
+ mx6_clk_lookup[i].name,
+ freq / 1000000, freq / 1000 % 1000);
+ return CMD_RET_SUCCESS;
+ }
+ }
+ if (i == ARRAY_SIZE(mx6_clk_lookup)) {
+ printf("clock %s not found; supported clocks are:\n", argv[1]);
+ for (i = 0; i < ARRAY_SIZE(mx6_clk_lookup); i++) {
+ printf("\t%s\n", mx6_clk_lookup[i].name);
+ }
+ } else {
+ printf("Failed to set clock %s to %s MHz\n",
+ argv[1], argv[2]);
+ }
+ return CMD_RET_FAILURE;
}
-#ifndef CONFIG_MX6SX
+#ifndef CONFIG_SOC_MX6SX
void enable_ipu_clock(void)
{
- struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
- int reg;
- reg = readl(&mxc_ccm->CCGR3);
+ int reg = readl(&imx_ccm->CCGR3);
reg |= MXC_CCM_CCGR3_IPU1_IPU_MASK;
- writel(reg, &mxc_ccm->CCGR3);
+ writel(reg, &imx_ccm->CCGR3);
+
+ if (is_mx6dqp()) {
+ setbits_le32(&imx_ccm->CCGR6, MXC_CCM_CCGR6_PRG_CLK0_MASK);
+ setbits_le32(&imx_ccm->CCGR3, MXC_CCM_CCGR3_IPU2_IPU_MASK);
+ }
}
#endif
/***************************************************/
U_BOOT_CMD(
- clocks, CONFIG_SYS_MAXARGS, 1, do_mx6_showclocks,
- "display clocks",
- ""
+ clocks, 4, 0, do_clocks,
+ "display/set clocks",
+ " - display clock settings\n"
+ "clocks <clkname> <freq> - set clock <clkname> to <freq> MHz"
);
projects / karo-tx-uboot.git / blobdiff