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Diffstat (limited to 'board/phytec/pcl063/spl.c')
| -rw-r--r-- | board/phytec/pcl063/spl.c | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/board/phytec/pcl063/spl.c b/board/phytec/pcl063/spl.c new file mode 100644 index 0000000000..b93cd493f2 --- /dev/null +++ b/board/phytec/pcl063/spl.c @@ -0,0 +1,160 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2018 Collabora Ltd. + * + * Based on board/ccv/xpress/spl.c: + * Copyright (C) 2015-2016 Stefan Roese <sr@denx.de> + */ + +#include <common.h> +#include <spl.h> +#include <asm/arch/clock.h> +#include <asm/io.h> +#include <asm/arch/mx6-ddr.h> +#include <asm/arch/mx6-pins.h> +#include <asm/arch/crm_regs.h> +#include <fsl_esdhc.h> + +/* Configuration for Micron MT41K256M16TW-107 IT:P, 32M x 16 x 8 -> 256MiB */ + +static struct mx6ul_iomux_grp_regs mx6_grp_ioregs = { + .grp_addds = 0x00000030, + .grp_ddrmode_ctl = 0x00020000, + .grp_b0ds = 0x00000030, + .grp_ctlds = 0x00000030, + .grp_b1ds = 0x00000030, + .grp_ddrpke = 0x00000000, + .grp_ddrmode = 0x00020000, + .grp_ddr_type = 0x000c0000, +}; + +static struct mx6ul_iomux_ddr_regs mx6_ddr_ioregs = { + .dram_dqm0 = 0x00000030, + .dram_dqm1 = 0x00000030, + .dram_ras = 0x00000030, + .dram_cas = 0x00000030, + .dram_odt0 = 0x00000030, + .dram_odt1 = 0x00000030, + .dram_sdba2 = 0x00000000, + .dram_sdclk_0 = 0x00000030, + .dram_sdqs0 = 0x00000030, + .dram_sdqs1 = 0x00000030, + .dram_reset = 0x00000030, +}; + +static struct mx6_mmdc_calibration mx6_mmcd_calib = { + .p0_mpwldectrl0 = 0x00000000, + .p0_mpdgctrl0 = 0x41480148, + .p0_mprddlctl = 0x40403E42, + .p0_mpwrdlctl = 0x40405852, +}; + +struct mx6_ddr_sysinfo ddr_sysinfo = { + .dsize = 0, /* Bus size = 16bit */ + .cs_density = 18, + .ncs = 1, + .cs1_mirror = 0, + .rtt_wr = 1, + .rtt_nom = 1, + .walat = 1, /* Write additional latency */ + .ralat = 5, /* Read additional latency */ + .mif3_mode = 3, /* Command prediction working mode */ + .bi_on = 1, /* Bank interleaving enabled */ + .pd_fast_exit = 1, + .sde_to_rst = 0x10, /* 14 cycles, 200us (JEDEC default) */ + .rst_to_cke = 0x23, /* 33 cycles, 500us (JEDEC default) */ + .ddr_type = DDR_TYPE_DDR3, + .refsel = 1, /* Refresh cycles at 32KHz */ + .refr = 7, /* 8 refresh commands per refresh cycle */ +}; + +static struct mx6_ddr3_cfg mem_ddr = { + .mem_speed = 933, + .density = 4, + .width = 16, + .banks = 8, + .rowaddr = 14, + .coladdr = 10, + .pagesz = 1, + .trcd = 1391, + .trcmin = 4791, + .trasmin = 3400, +}; + +static void ccgr_init(void) +{ + struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR; + + writel(0xFFFFFFFF, &ccm->CCGR0); + writel(0xFFFFFFFF, &ccm->CCGR1); + writel(0xFFFFFFFF, &ccm->CCGR2); + writel(0xFFFFFFFF, &ccm->CCGR3); + writel(0xFFFFFFFF, &ccm->CCGR4); + writel(0xFFFFFFFF, &ccm->CCGR5); + writel(0xFFFFFFFF, &ccm->CCGR6); +} + +static void spl_dram_init(void) +{ + mx6ul_dram_iocfg(mem_ddr.width, &mx6_ddr_ioregs, &mx6_grp_ioregs); + mx6_dram_cfg(&ddr_sysinfo, &mx6_mmcd_calib, &mem_ddr); +} + +#ifdef CONFIG_FSL_ESDHC + +#define USDHC_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_PUE | \ + PAD_CTL_PUS_22K_UP | PAD_CTL_SPEED_LOW | \ + PAD_CTL_DSE_80ohm | PAD_CTL_SRE_FAST | \ + PAD_CTL_HYS) + +static iomux_v3_cfg_t const usdhc1_pads[] = { + MX6_PAD_SD1_CLK__USDHC1_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD1_CMD__USDHC1_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD1_DATA0__USDHC1_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD1_DATA1__USDHC1_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD1_DATA2__USDHC1_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD1_DATA3__USDHC1_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_UART1_RTS_B__USDHC1_CD_B | MUX_PAD_CTRL(USDHC_PAD_CTRL), +}; + +static struct fsl_esdhc_cfg usdhc_cfg[] = { + { + .esdhc_base = USDHC1_BASE_ADDR, + .max_bus_width = 4, + }, +}; + +int board_mmc_getcd(struct mmc *mmc) +{ + return 1; +} + +int board_mmc_init(bd_t *bis) +{ + imx_iomux_v3_setup_multiple_pads(usdhc1_pads, ARRAY_SIZE(usdhc1_pads)); + usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK); + + return fsl_esdhc_initialize(bis, &usdhc_cfg[0]); +} + +#endif /* CONFIG_FSL_ESDHC */ + +void board_init_f(ulong dummy) +{ + ccgr_init(); + + /* Setup AIPS and disable watchdog */ + arch_cpu_init(); + + /* Setup iomux and fec */ + board_early_init_f(); + + /* Setup GP timer */ + timer_init(); + + /* UART clocks enabled and gd valid - init serial console */ + preloader_console_init(); + + /* DDR initialization */ + spl_dram_init(); +} |