u-boot/arch/arm/mach-rockchip/rk3288-board.c
Carlo Caione 315ded9730 rockchip: veyron: Set vcc33_sd regulator value
On the veyron board the vcc33_sd regulator is used as vmmc-supply for
the SD card. This regulator is powered in the MMC core during power on
but its value is never actually set.

In the veyron platform the reset value for the LDO output is 1.8V while
the standard (min and max) value for this regulator defined in the DTS
is 3.3V. When the MMC core enable the regulator without setting its
value, the output is automatically set to 1.8V instead of 3.3V.

With this patch we preemptively set the value to 3.3V.

Signed-off-by: Carlo Caione <carlo@endlessm.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
2018-07-21 01:55:27 +02:00

359 lines
7.2 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2015 Google, Inc
*/
#include <common.h>
#include <clk.h>
#include <dm.h>
#include <ram.h>
#include <syscon.h>
#include <asm/io.h>
#include <asm/arch/clock.h>
#include <asm/arch/cru_rk3288.h>
#include <asm/arch/periph.h>
#include <asm/arch/pmu_rk3288.h>
#include <asm/arch/qos_rk3288.h>
#include <asm/arch/boot_mode.h>
#include <asm/gpio.h>
#include <dm/pinctrl.h>
#include <dt-bindings/clock/rk3288-cru.h>
#include <power/regulator.h>
DECLARE_GLOBAL_DATA_PTR;
__weak int rk_board_late_init(void)
{
return 0;
}
int rk3288_qos_init(void)
{
int val = 2 << PRIORITY_HIGH_SHIFT | 2 << PRIORITY_LOW_SHIFT;
/* set vop qos to higher priority */
writel(val, CPU_AXI_QOS_PRIORITY + VIO0_VOP_QOS);
writel(val, CPU_AXI_QOS_PRIORITY + VIO1_VOP_QOS);
if (!fdt_node_check_compatible(gd->fdt_blob, 0,
"rockchip,rk3288-tinker"))
{
/* set isp qos to higher priority */
writel(val, CPU_AXI_QOS_PRIORITY + VIO1_ISP_R_QOS);
writel(val, CPU_AXI_QOS_PRIORITY + VIO1_ISP_W0_QOS);
writel(val, CPU_AXI_QOS_PRIORITY + VIO1_ISP_W1_QOS);
}
return 0;
}
static void rk3288_detect_reset_reason(void)
{
struct rk3288_cru *cru = rockchip_get_cru();
const char *reason;
if (IS_ERR(cru))
return;
switch (cru->cru_glb_rst_st) {
case GLB_POR_RST:
reason = "POR";
break;
case FST_GLB_RST_ST:
case SND_GLB_RST_ST:
reason = "RST";
break;
case FST_GLB_TSADC_RST_ST:
case SND_GLB_TSADC_RST_ST:
reason = "THERMAL";
break;
case FST_GLB_WDT_RST_ST:
case SND_GLB_WDT_RST_ST:
reason = "WDOG";
break;
default:
reason = "unknown reset";
}
env_set("reset_reason", reason);
/*
* Clear cru_glb_rst_st, so we can determine the last reset cause
* for following resets.
*/
rk_clrreg(&cru->cru_glb_rst_st, GLB_RST_ST_MASK);
}
int board_late_init(void)
{
setup_boot_mode();
rk3288_qos_init();
rk3288_detect_reset_reason();
return rk_board_late_init();
}
#if !CONFIG_IS_ENABLED(ROCKCHIP_BACK_TO_BROM)
static int veyron_init(void)
{
struct udevice *dev;
struct clk clk;
int ret;
ret = regulator_get_by_platname("vdd_arm", &dev);
if (ret) {
debug("Cannot set regulator name\n");
return ret;
}
/* Slowly raise to max CPU voltage to prevent overshoot */
ret = regulator_set_value(dev, 1200000);
if (ret)
return ret;
udelay(175); /* Must wait for voltage to stabilize, 2mV/us */
ret = regulator_set_value(dev, 1400000);
if (ret)
return ret;
udelay(100); /* Must wait for voltage to stabilize, 2mV/us */
ret = rockchip_get_clk(&clk.dev);
if (ret)
return ret;
clk.id = PLL_APLL;
ret = clk_set_rate(&clk, 1800000000);
if (IS_ERR_VALUE(ret))
return ret;
ret = regulator_get_by_platname("vcc33_sd", &dev);
if (ret) {
debug("Cannot get regulator name\n");
return ret;
}
ret = regulator_set_value(dev, 3300000);
if (ret)
return ret;
ret = regulators_enable_boot_on(false);
if (ret) {
debug("%s: Cannot enable boot on regulators\n", __func__);
return ret;
}
return 0;
}
#endif
int board_init(void)
{
#if CONFIG_IS_ENABLED(ROCKCHIP_BACK_TO_BROM)
struct udevice *pinctrl;
int ret;
/*
* We need to implement sdcard iomux here for the further
* initlization, otherwise, it'll hit sdcard command sending
* timeout exception.
*/
ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl);
if (ret) {
debug("%s: Cannot find pinctrl device\n", __func__);
goto err;
}
ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_SDCARD);
if (ret) {
debug("%s: Failed to set up SD card\n", __func__);
goto err;
}
return 0;
err:
printf("board_init: Error %d\n", ret);
/* No way to report error here */
hang();
return -1;
#else
int ret;
/* We do some SoC one time setting here */
if (!fdt_node_check_compatible(gd->fdt_blob, 0, "google,veyron")) {
ret = veyron_init();
if (ret)
return ret;
}
return 0;
#endif
}
#ifndef CONFIG_SYS_DCACHE_OFF
void enable_caches(void)
{
/* Enable D-cache. I-cache is already enabled in start.S */
dcache_enable();
}
#endif
#if defined(CONFIG_USB_GADGET) && defined(CONFIG_USB_GADGET_DWC2_OTG)
#include <usb.h>
#include <usb/dwc2_udc.h>
static struct dwc2_plat_otg_data rk3288_otg_data = {
.rx_fifo_sz = 512,
.np_tx_fifo_sz = 16,
.tx_fifo_sz = 128,
};
int board_usb_init(int index, enum usb_init_type init)
{
int node, phy_node;
const char *mode;
bool matched = false;
const void *blob = gd->fdt_blob;
u32 grf_phy_offset;
/* find the usb_otg node */
node = fdt_node_offset_by_compatible(blob, -1,
"rockchip,rk3288-usb");
while (node > 0) {
mode = fdt_getprop(blob, node, "dr_mode", NULL);
if (mode && strcmp(mode, "otg") == 0) {
matched = true;
break;
}
node = fdt_node_offset_by_compatible(blob, node,
"rockchip,rk3288-usb");
}
if (!matched) {
debug("Not found usb_otg device\n");
return -ENODEV;
}
rk3288_otg_data.regs_otg = fdtdec_get_addr(blob, node, "reg");
node = fdtdec_lookup_phandle(blob, node, "phys");
if (node <= 0) {
debug("Not found usb phy device\n");
return -ENODEV;
}
phy_node = fdt_parent_offset(blob, node);
if (phy_node <= 0) {
debug("Not found usb phy device\n");
return -ENODEV;
}
rk3288_otg_data.phy_of_node = phy_node;
grf_phy_offset = fdtdec_get_addr(blob, node, "reg");
/* find the grf node */
node = fdt_node_offset_by_compatible(blob, -1,
"rockchip,rk3288-grf");
if (node <= 0) {
debug("Not found grf device\n");
return -ENODEV;
}
rk3288_otg_data.regs_phy = grf_phy_offset +
fdtdec_get_addr(blob, node, "reg");
return dwc2_udc_probe(&rk3288_otg_data);
}
int board_usb_cleanup(int index, enum usb_init_type init)
{
return 0;
}
#endif
static int do_clock(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
{
static const struct {
char *name;
int id;
} clks[] = {
{ "osc", CLK_OSC },
{ "apll", CLK_ARM },
{ "dpll", CLK_DDR },
{ "cpll", CLK_CODEC },
{ "gpll", CLK_GENERAL },
#ifdef CONFIG_ROCKCHIP_RK3036
{ "mpll", CLK_NEW },
#else
{ "npll", CLK_NEW },
#endif
};
int ret, i;
struct udevice *dev;
ret = rockchip_get_clk(&dev);
if (ret) {
printf("clk-uclass not found\n");
return 0;
}
for (i = 0; i < ARRAY_SIZE(clks); i++) {
struct clk clk;
ulong rate;
clk.id = clks[i].id;
ret = clk_request(dev, &clk);
if (ret < 0)
continue;
rate = clk_get_rate(&clk);
printf("%s: %lu\n", clks[i].name, rate);
clk_free(&clk);
}
return 0;
}
U_BOOT_CMD(
clock, 2, 1, do_clock,
"display information about clocks",
""
);
int board_early_init_f(void)
{
const uintptr_t GRF_SOC_CON0 = 0xff770244;
const uintptr_t GRF_SOC_CON2 = 0xff77024c;
struct udevice *pinctrl;
struct udevice *dev;
int ret;
/*
* This init is done in SPL, but when chain-loading U-Boot SPL will
* have been skipped. Allow the clock driver to check if it needs
* setting up.
*/
ret = rockchip_get_clk(&dev);
if (ret) {
debug("CLK init failed: %d\n", ret);
return ret;
}
ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl);
if (ret) {
debug("%s: Cannot find pinctrl device\n", __func__);
return ret;
}
/* Enable debug UART */
ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_UART_DBG);
if (ret) {
debug("%s: Failed to set up console UART\n", __func__);
return ret;
}
rk_setreg(GRF_SOC_CON2, 1 << 0);
/*
* Disable JTAG on sdmmc0 IO. The SDMMC won't work until this bit is
* cleared
*/
rk_clrreg(GRF_SOC_CON0, 1 << 12);
return 0;
}