*/
#include <common.h>
+#include <div64.h>
#include <asm/io.h>
#include <asm/errno.h>
#include <asm/arch/imx-regs.h>
}
-#ifdef CONFIG_I2C_MXC
+#ifdef CONFIG_SYS_I2C_MXC
/* i2c_num can be from 0 - 2 */
int enable_i2c_clk(unsigned char enable, unsigned i2c_num)
{
}
#endif
+/* spi_num can be from 0 - SPI_MAX_NUM */
+int enable_spi_clk(unsigned char enable, unsigned spi_num)
+{
+ u32 reg;
+ u32 mask;
+
+ if (spi_num > SPI_MAX_NUM)
+ return -EINVAL;
+
+ mask = MXC_CCM_CCGR_CG_MASK << (spi_num << 1);
+ reg = __raw_readl(&imx_ccm->CCGR1);
+ if (enable)
+ reg |= mask;
+ else
+ reg &= ~mask;
+ __raw_writel(reg, &imx_ccm->CCGR1);
+ return 0;
+}
static u32 decode_pll(enum pll_clocks pll, u32 infreq)
{
u32 div;
div = __raw_readl(&imx_ccm->analog_pll_sys);
div &= BM_ANADIG_PLL_SYS_DIV_SELECT;
- return infreq * (div >> 1);
+ return (infreq * div) >> 1;
case PLL_BUS:
div = __raw_readl(&imx_ccm->analog_pll_528);
div &= BM_ANADIG_PLL_528_DIV_SELECT;
div = __raw_readl(&imx_ccm->analog_pll_enet);
div &= BM_ANADIG_PLL_ENET_DIV_SELECT;
- return (div == 3 ? 125000000 : 25000000 * (div << 1));
+ return 25000000 * (div + (div >> 1) + 1);
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;
+ }
+ div = __raw_readl(&imx_ccm->analog_pfd_528);
+ freq = (u64)decode_pll(PLL_BUS, MXC_HCLK);
+ break;
+ case PLL_USBOTG:
+ div = __raw_readl(&imx_ccm->analog_pfd_480);
+ freq = (u64)decode_pll(PLL_USBOTG, MXC_HCLK);
+ break;
+ default:
+ /* No PFD on other PLL */
+ return 0;
+ }
+
+ return lldiv(freq * 18, (div & ANATOP_PFD_FRAC_MASK(pfd_num)) >>
+ ANATOP_PFD_FRAC_SHIFT(pfd_num));
+}
static u32 get_mcu_main_clk(void)
{
freq = decode_pll(PLL_BUS, MXC_HCLK);
break;
case 1:
- freq = PLL2_PFD2_FREQ;
+ freq = mxc_get_pll_pfd(PLL_BUS, 2);
break;
case 2:
- freq = PLL2_PFD0_FREQ;
+ freq = mxc_get_pll_pfd(PLL_BUS, 0);
break;
case 3:
- freq = PLL2_PFD2_DIV_FREQ;
+ /* static / 2 divider */
+ freq = mxc_get_pll_pfd(PLL_BUS, 2) / 2;
break;
default:
break;
static u32 get_uart_clk(void)
{
u32 reg, uart_podf;
- u32 freq = PLL3_80M;
+ u32 freq = decode_pll(PLL_USBOTG, MXC_HCLK) / 6; /* static divider */
reg = __raw_readl(&imx_ccm->cscdr1);
-#ifdef CONFIG_MX6SL
+#if (defined(CONFIG_MX6SL) || defined(CONFIG_MX6SX))
if (reg & MXC_CCM_CSCDR1_UART_CLK_SEL)
freq = MXC_HCLK;
#endif
reg &= MXC_CCM_CSCDR2_ECSPI_CLK_PODF_MASK;
cspi_podf = reg >> MXC_CCM_CSCDR2_ECSPI_CLK_PODF_OFFSET;
- return PLL3_60M / (cspi_podf + 1);
+ return decode_pll(PLL_USBOTG, MXC_HCLK) / (8 * (cspi_podf + 1));
}
static u32 get_axi_clk(void)
if (cbcdr & MXC_CCM_CBCDR_AXI_SEL) {
if (cbcdr & MXC_CCM_CBCDR_AXI_ALT_SEL)
- root_freq = PLL2_PFD2_FREQ;
+ root_freq = mxc_get_pll_pfd(PLL_BUS, 2);
else
- root_freq = PLL3_PFD1_FREQ;
+ root_freq = mxc_get_pll_pfd(PLL_USBOTG, 1);
} else
root_freq = get_periph_clk();
root_freq = decode_pll(PLL_USBOTG, MXC_HCLK);
break;
case 2:
- root_freq = PLL2_PFD2_FREQ;
+ root_freq = mxc_get_pll_pfd(PLL_BUS, 2);
break;
case 3:
- root_freq = PLL2_PFD0_FREQ;
+ root_freq = mxc_get_pll_pfd(PLL_BUS, 0);
break;
}
return root_freq / (emi_slow_podf + 1);
}
-#ifdef CONFIG_MX6SL
+#if (defined(CONFIG_MX6SL) || defined(CONFIG_MX6SX))
static u32 get_mmdc_ch0_clk(void)
{
u32 cbcmr = __raw_readl(&imx_ccm->cbcmr);
freq = decode_pll(PLL_BUS, MXC_HCLK);
break;
case 1:
- freq = PLL2_PFD2_FREQ;
+ freq = mxc_get_pll_pfd(PLL_BUS, 2);
break;
case 2:
- freq = PLL2_PFD0_FREQ;
+ freq = mxc_get_pll_pfd(PLL_BUS, 0);
break;
case 3:
- freq = PLL2_PFD2_DIV_FREQ;
+ /* static / 2 divider */
+ freq = mxc_get_pll_pfd(PLL_BUS, 2) / 2;
}
return freq / (podf + 1);
}
+#else
+static u32 get_mmdc_ch0_clk(void)
+{
+ 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;
-int enable_fec_anatop_clock(void)
+ return get_periph_clk() / (mmdc_ch0_podf + 1);
+}
+#endif
+
+#ifdef CONFIG_FEC_MXC
+int enable_fec_anatop_clock(enum enet_freq freq)
{
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)
+ return -EINVAL;
+
reg = readl(&anatop->pll_enet);
+ reg &= ~BM_ANADIG_PLL_ENET_DIV_SELECT;
+ reg |= freq;
+
if ((reg & BM_ANADIG_PLL_ENET_POWERDOWN) ||
(!(reg & BM_ANADIG_PLL_ENET_LOCK))) {
reg &= ~BM_ANADIG_PLL_ENET_POWERDOWN;
return 0;
}
-
-#else
-static u32 get_mmdc_ch0_clk(void)
-{
- 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);
-}
#endif
static u32 get_usdhc_clk(u32 port)
}
if (clk_sel)
- root_freq = PLL2_PFD0_FREQ;
+ root_freq = mxc_get_pll_pfd(PLL_BUS, 0);
else
- root_freq = PLL2_PFD2_FREQ;
+ root_freq = mxc_get_pll_pfd(PLL_BUS, 2);
return root_freq / (usdhc_podf + 1);
}
u32 imx_get_fecclk(void)
{
- return decode_pll(PLL_ENET, MXC_HCLK);
+ return mxc_get_clock(MXC_IPG_CLK);
}
-int enable_sata_clock(void)
+static int enable_enet_pll(uint32_t en)
{
- u32 reg = 0;
- s32 timeout = 100000;
struct mxc_ccm_reg *const imx_ccm
= (struct mxc_ccm_reg *) CCM_BASE_ADDR;
-
- /* Enable sata clock */
- reg = readl(&imx_ccm->CCGR5); /* CCGR5 */
- reg |= MXC_CCM_CCGR5_SATA_MASK;
- writel(reg, &imx_ccm->CCGR5);
+ s32 timeout = 100000;
+ u32 reg = 0;
/* Enable PLLs */
reg = readl(&imx_ccm->analog_pll_enet);
return -EIO;
reg &= ~BM_ANADIG_PLL_SYS_BYPASS;
writel(reg, &imx_ccm->analog_pll_enet);
- reg |= BM_ANADIG_PLL_ENET_ENABLE_SATA;
+ reg |= en;
writel(reg, &imx_ccm->analog_pll_enet);
+ return 0;
+}
- return 0 ;
+#ifndef CONFIG_MX6SX
+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);
+}
+#endif
+
+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;
+
+ /*
+ * Here be dragons!
+ *
+ * The register ANATOP_MISC1 is not documented in the Freescale
+ * MX6RM. The register that is mapped in the ANATOP space and
+ * marked as ANATOP_MISC1 is actually documented in the PMU section
+ * of the datasheet as PMU_MISC1.
+ *
+ * Switch LVDS clock source to SATA (0xb), disable clock INPUT and
+ * enable clock OUTPUT. This is important for PCI express link that
+ * is clocked from the i.MX6.
+ */
+#define ANADIG_ANA_MISC1_LVDSCLK1_IBEN (1 << 12)
+#define ANADIG_ANA_MISC1_LVDSCLK1_OBEN (1 << 10)
+#define ANADIG_ANA_MISC1_LVDS1_CLK_SEL_MASK 0x0000001F
+ clrsetbits_le32(&anatop_regs->ana_misc1,
+ ANADIG_ANA_MISC1_LVDSCLK1_IBEN |
+ ANADIG_ANA_MISC1_LVDS1_CLK_SEL_MASK,
+ ANADIG_ANA_MISC1_LVDSCLK1_OBEN | 0xb);
+
+ /* PCIe reference clock sourced from AXI. */
+ clrbits_le32(&ccm_regs->cbcmr, MXC_CCM_CBCMR_PCIE_AXI_CLK_SEL);
+
+ /* Party time! Ungate the clock to the PCIe. */
+#ifndef CONFIG_MX6SX
+ ungate_sata_clock();
+#endif
+ ungate_pcie_clock();
+
+ return enable_enet_pll(BM_ANADIG_PLL_ENET_ENABLE_SATA |
+ BM_ANADIG_PLL_ENET_ENABLE_PCIE);
}
unsigned int mxc_get_clock(enum mxc_clock clk)
return 0;
}
+#ifndef CONFIG_MX6SX
void enable_ipu_clock(void)
{
struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
reg |= MXC_CCM_CCGR3_IPU1_IPU_MASK;
writel(reg, &mxc_ccm->CCGR3);
}
+#endif
/***************************************************/
U_BOOT_CMD(
projects / karo-tx-uboot.git / blobdiff