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![Tom Rini](/assets/img/avatar_default.png)
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
163 lines
3.4 KiB
C
163 lines
3.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Board init file for Dragonboard 820C
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*
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* (C) Copyright 2017 Jorge Ramirez-Ortiz <jorge.ramirez-ortiz@linaro.org>
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*/
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#include <asm/arch/sysmap-apq8096.h>
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#include <linux/arm-smccc.h>
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#include <linux/psci.h>
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#include <common.h>
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#include <dm.h>
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#include <asm/io.h>
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#include <linux/bitops.h>
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#include <asm/psci.h>
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#include <asm/gpio.h>
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DECLARE_GLOBAL_DATA_PTR;
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int dram_init(void)
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{
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gd->ram_size = PHYS_SDRAM_SIZE;
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return 0;
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}
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int dram_init_banksize(void)
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{
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gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
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gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
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gd->bd->bi_dram[1].start = PHYS_SDRAM_2;
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gd->bd->bi_dram[1].size = PHYS_SDRAM_2_SIZE;
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return 0;
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}
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static void sdhci_power_init(void)
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{
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const u32 TLMM_PULL_MASK = 0x3;
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const u32 TLMM_HDRV_MASK = 0x7;
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struct tlmm_cfg {
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u32 bit; /* bit in the register */
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u8 mask; /* mask clk/dat/cmd control */
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u8 val;
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};
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/* bit offsets in the sdc tlmm register */
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enum { SDC1_DATA_HDRV = 0,
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SDC1_CMD_HDRV = 3,
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SDC1_CLK_HDRV = 6,
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SDC1_DATA_PULL = 9,
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SDC1_CMD_PULL = 11,
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SDC1_CLK_PULL = 13,
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SDC1_RCLK_PULL = 15,
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};
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enum { TLMM_PULL_DOWN = 0x1,
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TLMM_PULL_UP = 0x3,
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TLMM_NO_PULL = 0x0,
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};
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enum { TLMM_CUR_VAL_10MA = 0x04,
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TLMM_CUR_VAL_16MA = 0x07,
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};
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int i;
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/* drive strength configs for sdhc pins */
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const struct tlmm_cfg hdrv[] = {
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{ SDC1_CLK_HDRV, TLMM_CUR_VAL_16MA, TLMM_HDRV_MASK, },
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{ SDC1_CMD_HDRV, TLMM_CUR_VAL_10MA, TLMM_HDRV_MASK, },
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{ SDC1_DATA_HDRV, TLMM_CUR_VAL_10MA, TLMM_HDRV_MASK, },
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};
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/* pull configs for sdhc pins */
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const struct tlmm_cfg pull[] = {
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{ SDC1_CLK_PULL, TLMM_NO_PULL, TLMM_PULL_MASK, },
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{ SDC1_CMD_PULL, TLMM_PULL_UP, TLMM_PULL_MASK, },
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{ SDC1_DATA_PULL, TLMM_PULL_UP, TLMM_PULL_MASK, },
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};
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const struct tlmm_cfg rclk[] = {
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{ SDC1_RCLK_PULL, TLMM_PULL_DOWN, TLMM_PULL_MASK,},
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};
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for (i = 0; i < ARRAY_SIZE(hdrv); i++)
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clrsetbits_le32(SDC1_HDRV_PULL_CTL_REG,
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hdrv[i].mask << hdrv[i].bit,
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hdrv[i].val << hdrv[i].bit);
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for (i = 0; i < ARRAY_SIZE(pull); i++)
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clrsetbits_le32(SDC1_HDRV_PULL_CTL_REG,
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pull[i].mask << pull[i].bit,
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pull[i].val << pull[i].bit);
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for (i = 0; i < ARRAY_SIZE(rclk); i++)
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clrsetbits_le32(SDC1_HDRV_PULL_CTL_REG,
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rclk[i].mask << rclk[i].bit,
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rclk[i].val << rclk[i].bit);
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}
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static void show_psci_version(void)
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{
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struct arm_smccc_res res;
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arm_smccc_smc(ARM_PSCI_0_2_FN_PSCI_VERSION, 0, 0, 0, 0, 0, 0, 0, &res);
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printf("PSCI: v%ld.%ld\n",
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PSCI_VERSION_MAJOR(res.a0),
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PSCI_VERSION_MINOR(res.a0));
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}
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int board_init(void)
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{
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sdhci_power_init();
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show_psci_version();
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return 0;
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}
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void reset_cpu(ulong addr)
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{
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psci_system_reset();
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}
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/* Check for vol- button - if pressed - stop autoboot */
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int misc_init_r(void)
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{
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struct udevice *pon;
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struct gpio_desc resin;
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int node, ret;
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ret = uclass_get_device_by_name(UCLASS_GPIO, "pm8994_pon@800", &pon);
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if (ret < 0) {
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printf("Failed to find PMIC pon node. Check device tree\n");
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return 0;
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}
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node = fdt_subnode_offset(gd->fdt_blob, dev_of_offset(pon),
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"key_vol_down");
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if (node < 0) {
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printf("Failed to find key_vol_down node. Check device tree\n");
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return 0;
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}
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if (gpio_request_by_name_nodev(offset_to_ofnode(node), "gpios", 0,
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&resin, 0)) {
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printf("Failed to request key_vol_down button.\n");
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return 0;
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}
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if (dm_gpio_get_value(&resin)) {
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env_set("bootdelay", "-1");
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printf("Power button pressed - dropping to console.\n");
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}
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return 0;
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}
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