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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Board init file for Dragonboard 820C
- *
- * (C) Copyright 2017 Jorge Ramirez-Ortiz <jorge.ramirez-ortiz@linaro.org>
- */
- #include <cpu_func.h>
- #include <asm/arch/sysmap-apq8096.h>
- #include <env.h>
- #include <linux/arm-smccc.h>
- #include <linux/psci.h>
- #include <common.h>
- #include <dm.h>
- #include <asm/io.h>
- #include <linux/bitops.h>
- #include <asm/psci.h>
- #include <asm/gpio.h>
- DECLARE_GLOBAL_DATA_PTR;
- int dram_init(void)
- {
- gd->ram_size = PHYS_SDRAM_SIZE;
- return 0;
- }
- int dram_init_banksize(void)
- {
- gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
- gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
- gd->bd->bi_dram[1].start = PHYS_SDRAM_2;
- gd->bd->bi_dram[1].size = PHYS_SDRAM_2_SIZE;
- return 0;
- }
- static void sdhci_power_init(void)
- {
- const u32 TLMM_PULL_MASK = 0x3;
- const u32 TLMM_HDRV_MASK = 0x7;
- struct tlmm_cfg {
- u32 bit; /* bit in the register */
- u8 mask; /* mask clk/dat/cmd control */
- u8 val;
- };
- /* bit offsets in the sdc tlmm register */
- enum { SDC1_DATA_HDRV = 0,
- SDC1_CMD_HDRV = 3,
- SDC1_CLK_HDRV = 6,
- SDC1_DATA_PULL = 9,
- SDC1_CMD_PULL = 11,
- SDC1_CLK_PULL = 13,
- SDC1_RCLK_PULL = 15,
- };
- enum { TLMM_PULL_DOWN = 0x1,
- TLMM_PULL_UP = 0x3,
- TLMM_NO_PULL = 0x0,
- };
- enum { TLMM_CUR_VAL_10MA = 0x04,
- TLMM_CUR_VAL_16MA = 0x07,
- };
- int i;
- /* drive strength configs for sdhc pins */
- const struct tlmm_cfg hdrv[] = {
-
- { SDC1_CLK_HDRV, TLMM_CUR_VAL_16MA, TLMM_HDRV_MASK, },
- { SDC1_CMD_HDRV, TLMM_CUR_VAL_10MA, TLMM_HDRV_MASK, },
- { SDC1_DATA_HDRV, TLMM_CUR_VAL_10MA, TLMM_HDRV_MASK, },
- };
- /* pull configs for sdhc pins */
- const struct tlmm_cfg pull[] = {
-
- { SDC1_CLK_PULL, TLMM_NO_PULL, TLMM_PULL_MASK, },
- { SDC1_CMD_PULL, TLMM_PULL_UP, TLMM_PULL_MASK, },
- { SDC1_DATA_PULL, TLMM_PULL_UP, TLMM_PULL_MASK, },
- };
- const struct tlmm_cfg rclk[] = {
-
- { SDC1_RCLK_PULL, TLMM_PULL_DOWN, TLMM_PULL_MASK,},
- };
- for (i = 0; i < ARRAY_SIZE(hdrv); i++)
- clrsetbits_le32(SDC1_HDRV_PULL_CTL_REG,
- hdrv[i].mask << hdrv[i].bit,
- hdrv[i].val << hdrv[i].bit);
- for (i = 0; i < ARRAY_SIZE(pull); i++)
- clrsetbits_le32(SDC1_HDRV_PULL_CTL_REG,
- pull[i].mask << pull[i].bit,
- pull[i].val << pull[i].bit);
- for (i = 0; i < ARRAY_SIZE(rclk); i++)
- clrsetbits_le32(SDC1_HDRV_PULL_CTL_REG,
- rclk[i].mask << rclk[i].bit,
- rclk[i].val << rclk[i].bit);
- }
- static void show_psci_version(void)
- {
- struct arm_smccc_res res;
- arm_smccc_smc(ARM_PSCI_0_2_FN_PSCI_VERSION, 0, 0, 0, 0, 0, 0, 0, &res);
- printf("PSCI: v%ld.%ld\n",
- PSCI_VERSION_MAJOR(res.a0),
- PSCI_VERSION_MINOR(res.a0));
- }
- int board_init(void)
- {
- sdhci_power_init();
- show_psci_version();
- return 0;
- }
- void reset_cpu(ulong addr)
- {
- psci_system_reset();
- }
- /* Check for vol- button - if pressed - stop autoboot */
- int misc_init_r(void)
- {
- struct udevice *pon;
- struct gpio_desc resin;
- int node, ret;
- ret = uclass_get_device_by_name(UCLASS_GPIO, "pm8994_pon@800", &pon);
- if (ret < 0) {
- printf("Failed to find PMIC pon node. Check device tree\n");
- return 0;
- }
- node = fdt_subnode_offset(gd->fdt_blob, dev_of_offset(pon),
- "key_vol_down");
- if (node < 0) {
- printf("Failed to find key_vol_down node. Check device tree\n");
- return 0;
- }
- if (gpio_request_by_name_nodev(offset_to_ofnode(node), "gpios", 0,
- &resin, 0)) {
- printf("Failed to request key_vol_down button.\n");
- return 0;
- }
- if (dm_gpio_get_value(&resin)) {
- env_set("bootdelay", "-1");
- printf("Power button pressed - dropping to console.\n");
- }
- return 0;
- }
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