#include <asm/arch/sys_proto.h>
#include <asm/arch/clk_rst.h>
+#include <asm/arch/clock.h>
#include <asm/arch/pinmux.h>
#include <asm/arch/uart.h>
#include "board.h"
+#ifdef CONFIG_TEGRA2_MMC
+#include <mmc.h>
+#endif
+
DECLARE_GLOBAL_DATA_PTR;
const struct tegra2_sysinfo sysinfo = {
*/
int timer_init(void)
{
- reset_timer();
return 0;
}
static void clock_init_uart(void)
{
struct clk_rst_ctlr *clkrst = (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
+ struct clk_pll *pll = &clkrst->crc_pll[CLOCK_PLL_ID_PERIPH];
u32 reg;
- reg = readl(&clkrst->crc_pllp_base);
+ reg = readl(&pll->pll_base);
if (!(reg & PLL_BASE_OVRRIDE)) {
/* Override pllp setup for 216MHz operation. */
- reg = (PLL_BYPASS | PLL_BASE_OVRRIDE | PLL_DIVP);
- reg |= (((NVRM_PLLP_FIXED_FREQ_KHZ/500) << 8) | PLL_DIVM);
- writel(reg, &clkrst->crc_pllp_base);
+ reg = (PLL_BYPASS | PLL_BASE_OVRRIDE | PLL_DIVP_VALUE);
+ reg |= (((NVRM_PLLP_FIXED_FREQ_KHZ/500) << 8) | PLL_DIVM_VALUE);
+ writel(reg, &pll->pll_base);
reg |= PLL_ENABLE;
- writel(reg, &clkrst->crc_pllp_base);
+ writel(reg, &pll->pll_base);
reg &= ~PLL_BYPASS;
- writel(reg, &clkrst->crc_pllp_base);
+ writel(reg, &pll->pll_base);
}
/* Now do the UART reset/clock enable */
#if defined(CONFIG_TEGRA2_ENABLE_UARTA)
- /* Assert Reset to UART */
- reg = readl(&clkrst->crc_rst_dev_l);
- reg |= SWR_UARTA_RST; /* SWR_UARTA_RST = 1 */
- writel(reg, &clkrst->crc_rst_dev_l);
-
- /* Enable clk to UART */
- reg = readl(&clkrst->crc_clk_out_enb_l);
- reg |= CLK_ENB_UARTA; /* CLK_ENB_UARTA = 1 */
- writel(reg, &clkrst->crc_clk_out_enb_l);
+ /* Assert UART reset and enable clock */
+ reset_set_enable(PERIPH_ID_UART1, 1);
+ clock_enable(PERIPH_ID_UART1);
/* Enable pllp_out0 to UART */
reg = readl(&clkrst->crc_clk_src_uarta);
udelay(2);
/* De-assert reset to UART */
- reg = readl(&clkrst->crc_rst_dev_l);
- reg &= ~SWR_UARTA_RST; /* SWR_UARTA_RST = 0 */
- writel(reg, &clkrst->crc_rst_dev_l);
+ reset_set_enable(PERIPH_ID_UART1, 0);
#endif /* CONFIG_TEGRA2_ENABLE_UARTA */
#if defined(CONFIG_TEGRA2_ENABLE_UARTD)
- /* Assert Reset to UART */
- reg = readl(&clkrst->crc_rst_dev_u);
- reg |= SWR_UARTD_RST; /* SWR_UARTD_RST = 1 */
- writel(reg, &clkrst->crc_rst_dev_u);
-
- /* Enable clk to UART */
- reg = readl(&clkrst->crc_clk_out_enb_u);
- reg |= CLK_ENB_UARTD; /* CLK_ENB_UARTD = 1 */
- writel(reg, &clkrst->crc_clk_out_enb_u);
+ /* Assert UART reset and enable clock */
+ reset_set_enable(PERIPH_ID_UART4, 1);
+ clock_enable(PERIPH_ID_UART4);
/* Enable pllp_out0 to UART */
reg = readl(&clkrst->crc_clk_src_uartd);
udelay(2);
/* De-assert reset to UART */
- reg = readl(&clkrst->crc_rst_dev_u);
- reg &= ~SWR_UARTD_RST; /* SWR_UARTD_RST = 0 */
- writel(reg, &clkrst->crc_rst_dev_u);
+ reset_set_enable(PERIPH_ID_UART4, 0);
#endif /* CONFIG_TEGRA2_ENABLE_UARTD */
}
reg &= 0xFFF0FFFF; /* IRRX_/IRTX_SEL [19:16] = 00 UARTA */
writel(reg, &pmt->pmt_ctl_c);
- reg = readl(&pmt->pmt_tri_a);
- reg &= ~Z_IRRX; /* Z_IRRX = normal (0) */
- reg &= ~Z_IRTX; /* Z_IRTX = normal (0) */
- writel(reg, &pmt->pmt_tri_a);
+ pinmux_tristate_disable(PIN_IRRX);
+ pinmux_tristate_disable(PIN_IRTX);
#endif /* CONFIG_TEGRA2_ENABLE_UARTA */
#if defined(CONFIG_TEGRA2_ENABLE_UARTD)
reg = readl(&pmt->pmt_ctl_b);
reg &= 0xFFFFFFF3; /* GMC_SEL [3:2] = 00, UARTD */
writel(reg, &pmt->pmt_ctl_b);
- reg = readl(&pmt->pmt_tri_a);
- reg &= ~Z_GMC; /* Z_GMC = normal (0) */
- writel(reg, &pmt->pmt_tri_a);
+ pinmux_tristate_disable(PIN_GMC);
#endif /* CONFIG_TEGRA2_ENABLE_UARTD */
}
+/*
+ * Routine: clock_init_mmc
+ * Description: init the PLL and clocks for the SDMMC controllers
+ */
+static void clock_init_mmc(void)
+{
+ struct clk_rst_ctlr *clkrst = (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
+ u32 reg;
+
+ /* Do the SDMMC resets/clock enables */
+ reset_set_enable(PERIPH_ID_SDMMC4, 1);
+ clock_enable(PERIPH_ID_SDMMC4);
+
+ /* Enable pllp_out0 to SDMMC4 */
+ reg = readl(&clkrst->crc_clk_src_sdmmc4);
+ reg &= 0x3FFFFF00; /* SDMMC4_CLK_SRC = 00, PLLP_OUT0 */
+ reg |= (10 << 1); /* n-1, 11-1 shl 1 */
+ writel(reg, &clkrst->crc_clk_src_sdmmc4);
+
+ /*
+ * As per the Tegra2 TRM, section 5.3.4:
+ * 'Wait 2 us for the clock to flush through the pipe/logic'
+ */
+ udelay(2);
+
+ reset_set_enable(PERIPH_ID_SDMMC4, 1);
+
+ reset_set_enable(PERIPH_ID_SDMMC3, 1);
+ clock_enable(PERIPH_ID_SDMMC3);
+
+ /* Enable pllp_out0 to SDMMC4, set divisor to 11 for 20MHz */
+ reg = readl(&clkrst->crc_clk_src_sdmmc3);
+ reg &= 0x3FFFFF00; /* SDMMC3_CLK_SRC = 00, PLLP_OUT0 */
+ reg |= (10 << 1); /* n-1, 11-1 shl 1 */
+ writel(reg, &clkrst->crc_clk_src_sdmmc3);
+
+ /* wait for 2us */
+ udelay(2);
+
+ reset_set_enable(PERIPH_ID_SDMMC3, 0);
+}
+
+/*
+ * Routine: pin_mux_mmc
+ * Description: setup the pin muxes/tristate values for the SDMMC(s)
+ */
+static void pin_mux_mmc(void)
+{
+ struct pmux_tri_ctlr *pmt = (struct pmux_tri_ctlr *)NV_PA_APB_MISC_BASE;
+ u32 reg;
+
+ /* SDMMC4 */
+ /* config 2, x8 on 2nd set of pins */
+ reg = readl(&pmt->pmt_ctl_a);
+ reg |= (3 << 16); /* ATB_SEL [17:16] = 11 SDIO4 */
+ writel(reg, &pmt->pmt_ctl_a);
+ reg = readl(&pmt->pmt_ctl_b);
+ reg |= (3 << 0); /* GMA_SEL [1:0] = 11 SDIO4 */
+ writel(reg, &pmt->pmt_ctl_b);
+ reg = readl(&pmt->pmt_ctl_d);
+ reg |= (3 << 0); /* GME_SEL [1:0] = 11 SDIO4 */
+ writel(reg, &pmt->pmt_ctl_d);
+
+ pinmux_tristate_disable(PIN_ATB);
+ pinmux_tristate_disable(PIN_GMA);
+ pinmux_tristate_disable(PIN_GME);
+
+ /* SDMMC3 */
+ /* SDIO3_CLK, SDIO3_CMD, SDIO3_DAT[3:0] */
+ reg = readl(&pmt->pmt_ctl_d);
+ reg &= 0xFFFF03FF;
+ reg |= (2 << 10); /* SDB_SEL [11:10] = 01 SDIO3 */
+ reg |= (2 << 12); /* SDC_SEL [13:12] = 01 SDIO3 */
+ reg |= (2 << 14); /* SDD_SEL [15:14] = 01 SDIO3 */
+ writel(reg, &pmt->pmt_ctl_d);
+
+ pinmux_tristate_disable(PIN_SDC);
+ pinmux_tristate_disable(PIN_SDD);
+ pinmux_tristate_disable(PIN_SDB);
+}
+
/*
* Routine: clock_init
* Description: Do individual peripheral clock reset/enables
{
/* boot param addr */
gd->bd->bi_boot_params = (NV_PA_SDRAM_BASE + 0x100);
- /* board id for Linux */
- gd->bd->bi_arch_number = CONFIG_MACH_TYPE;
return 0;
}
+
+#ifdef CONFIG_TEGRA2_MMC
+/* this is a weak define that we are overriding */
+int board_mmc_init(bd_t *bd)
+{
+ debug("board_mmc_init called\n");
+ /* Enable clocks, muxes, etc. for SDMMC controllers */
+ clock_init_mmc();
+ pin_mux_mmc();
+
+ debug("board_mmc_init: init eMMC\n");
+ /* init dev 0, eMMC chip, with 4-bit bus */
+ tegra2_mmc_init(0, 4);
+
+ debug("board_mmc_init: init SD slot\n");
+ /* init dev 1, SD slot, with 4-bit bus */
+ tegra2_mmc_init(1, 4);
+
+ return 0;
+}
+
+/* this is a weak define that we are overriding */
+int board_mmc_getcd(u8 *cd, struct mmc *mmc)
+{
+ debug("board_mmc_getcd called\n");
+ /*
+ * Hard-code CD presence for now. Need to add GPIO inputs
+ * for Seaboard & Harmony (& Kaen/Aebl/Wario?)
+ */
+ *cd = 1;
+ return 0;
+}
+#endif
projects / karo-tx-uboot.git / blobdiff