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u-boot/board/ge/bx50v3/bx50v3.c
Sebastian Reichel 717bf50f4b board: ge: bx50v3: cleanup phy config 
The current PHY rework does the following things:

1. Configure 125MHz clock
2. Setup the TX clock delay (RX is enabled by default),
3. Setup reserved bits to avoid voltage peak

The clock delays are nowadays already configured by the
PHY driver (in ar803x_delay_config). The code for that
can simply be dropped. The clock speed can also be
configured by the PHY driver by adding the device tree
property "qca,clk-out-frequency".

What is left is setting up the undocumented reserved bits
to avoid the voltage peak problem. I slightly improved its
documentation while updating the board's PHY rework code.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
2020-12-26 14:56:09 +01:00

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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2015 Timesys Corporation
* Copyright 2015 General Electric Company
* Copyright 2012 Freescale Semiconductor, Inc.
*/
#include <image.h>
#include <init.h>
#include <asm/arch/clock.h>
#include <asm/arch/imx-regs.h>
#include <asm/arch/iomux.h>
#include <asm/arch/mx6-pins.h>
#include <env.h>
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/libfdt.h>
#include <asm/gpio.h>
#include <asm/mach-imx/iomux-v3.h>
#include <asm/mach-imx/boot_mode.h>
#include <asm/mach-imx/video.h>
#include <mmc.h>
#include <fsl_esdhc_imx.h>
#include <miiphy.h>
#include <net.h>
#include <netdev.h>
#include <asm/arch/mxc_hdmi.h>
#include <asm/arch/crm_regs.h>
#include <asm/io.h>
#include <asm/arch/sys_proto.h>
#include <power/regulator.h>
#include <power/da9063_pmic.h>
#include <input.h>
#include <pwm.h>
#include <version.h>
#include <stdlib.h>
#include <dm/root.h>
#include "../common/ge_rtc.h"
#include "../common/vpd_reader.h"
#include "../../../drivers/net/e1000.h"
#include <pci.h>
#include <panel.h>
DECLARE_GLOBAL_DATA_PTR;
#define VPD_PRODUCT_B850 1
#define VPD_PRODUCT_B650 2
#define VPD_PRODUCT_B450 3
#define AR8033_DBG_REG_ADDR 0x1d
#define AR8033_DBG_REG_DATA 0x1e
#define AR8033_SERDES_REG 0x5
static int productid; /* Default to generic. */
static struct vpd_cache vpd;
#define NC_PAD_CTRL (PAD_CTL_PUS_100K_UP | \
PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | \
PAD_CTL_HYS)
int dram_init(void)
{
gd->ram_size = imx_ddr_size();
return 0;
}
int board_phy_config(struct phy_device *phydev)
{
/*
* Set reserved bits to avoid board specific voltage peak issue. The
* value is a magic number provided directly by Qualcomm. Note, that
* PHY driver will take control of BIT(8) in this register to control
* TX clock delay, so we do not initialize that bit here.
*/
phy_write(phydev, MDIO_DEVAD_NONE, AR8033_DBG_REG_ADDR, AR8033_SERDES_REG);
phy_write(phydev, MDIO_DEVAD_NONE, AR8033_DBG_REG_DATA, 0x3c47);
if (phydev->drv->config)
phydev->drv->config(phydev);
return 0;
}
#if defined(CONFIG_VIDEO_IPUV3)
static void do_enable_backlight(struct display_info_t const *dev)
{
struct udevice *panel;
int ret;
ret = uclass_get_device(UCLASS_PANEL, 0, &panel);
if (ret) {
printf("Could not find panel: %d\n", ret);
return;
}
panel_set_backlight(panel, 100);
panel_enable_backlight(panel);
}
static void do_enable_hdmi(struct display_info_t const *dev)
{
imx_enable_hdmi_phy();
}
static int is_b850v3(void)
{
return productid == VPD_PRODUCT_B850;
}
static int detect_lcd(struct display_info_t const *dev)
{
return !is_b850v3();
}
struct display_info_t const displays[] = {{
.bus = -1,
.addr = -1,
.pixfmt = IPU_PIX_FMT_RGB24,
.detect = detect_lcd,
.enable = do_enable_backlight,
.mode = {
.name = "G121X1-L03",
.refresh = 60,
.xres = 1024,
.yres = 768,
.pixclock = 15385,
.left_margin = 20,
.right_margin = 300,
.upper_margin = 30,
.lower_margin = 8,
.hsync_len = 1,
.vsync_len = 1,
.sync = FB_SYNC_EXT,
.vmode = FB_VMODE_NONINTERLACED
} }, {
.bus = -1,
.addr = 3,
.pixfmt = IPU_PIX_FMT_RGB24,
.detect = detect_hdmi,
.enable = do_enable_hdmi,
.mode = {
.name = "HDMI",
.refresh = 60,
.xres = 1024,
.yres = 768,
.pixclock = 15385,
.left_margin = 220,
.right_margin = 40,
.upper_margin = 21,
.lower_margin = 7,
.hsync_len = 60,
.vsync_len = 10,
.sync = FB_SYNC_EXT,
.vmode = FB_VMODE_NONINTERLACED
} } };
size_t display_count = ARRAY_SIZE(displays);
static void enable_videopll(void)
{
struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
s32 timeout = 100000;
setbits_le32(&ccm->analog_pll_video, BM_ANADIG_PLL_VIDEO_POWERDOWN);
/* PLL_VIDEO 455MHz (24MHz * (37+11/12) / 2)
* |
* PLL5
* |
* CS2CDR[LDB_DI0_CLK_SEL]
* |
* +----> LDB_DI0_SERIAL_CLK_ROOT
* |
* +--> CSCMR2[LDB_DI0_IPU_DIV] --> LDB_DI0_IPU 455 / 7 = 65 MHz
*/
clrsetbits_le32(&ccm->analog_pll_video,
BM_ANADIG_PLL_VIDEO_DIV_SELECT |
BM_ANADIG_PLL_VIDEO_POST_DIV_SELECT,
BF_ANADIG_PLL_VIDEO_DIV_SELECT(37) |
BF_ANADIG_PLL_VIDEO_POST_DIV_SELECT(1));
writel(BF_ANADIG_PLL_VIDEO_NUM_A(11), &ccm->analog_pll_video_num);
writel(BF_ANADIG_PLL_VIDEO_DENOM_B(12), &ccm->analog_pll_video_denom);
clrbits_le32(&ccm->analog_pll_video, BM_ANADIG_PLL_VIDEO_POWERDOWN);
while (timeout--)
if (readl(&ccm->analog_pll_video) & BM_ANADIG_PLL_VIDEO_LOCK)
break;
if (timeout < 0)
printf("Warning: video pll lock timeout!\n");
clrsetbits_le32(&ccm->analog_pll_video,
BM_ANADIG_PLL_VIDEO_BYPASS,
BM_ANADIG_PLL_VIDEO_ENABLE);
}
static void setup_display_b850v3(void)
{
struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
enable_videopll();
/* IPU1 DI0 clock is 455MHz / 7 = 65MHz */
setbits_le32(&mxc_ccm->cscmr2, MXC_CCM_CSCMR2_LDB_DI0_IPU_DIV);
imx_setup_hdmi();
/* Set LDB_DI0 as clock source for IPU_DI0 */
clrsetbits_le32(&mxc_ccm->chsccdr,
MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_MASK,
(CHSCCDR_CLK_SEL_LDB_DI0 <<
MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_OFFSET));
/* Turn on IPU LDB DI0 clocks */
setbits_le32(&mxc_ccm->CCGR3, MXC_CCM_CCGR3_LDB_DI0_MASK);
enable_ipu_clock();
writel(IOMUXC_GPR2_BGREF_RRMODE_EXTERNAL_RES |
IOMUXC_GPR2_DI1_VS_POLARITY_ACTIVE_LOW |
IOMUXC_GPR2_DI0_VS_POLARITY_ACTIVE_LOW |
IOMUXC_GPR2_BIT_MAPPING_CH1_SPWG |
IOMUXC_GPR2_DATA_WIDTH_CH1_24BIT |
IOMUXC_GPR2_BIT_MAPPING_CH0_SPWG |
IOMUXC_GPR2_DATA_WIDTH_CH0_24BIT |
IOMUXC_GPR2_SPLIT_MODE_EN_MASK |
IOMUXC_GPR2_LVDS_CH0_MODE_ENABLED_DI0 |
IOMUXC_GPR2_LVDS_CH1_MODE_ENABLED_DI0,
&iomux->gpr[2]);
clrbits_le32(&iomux->gpr[3],
IOMUXC_GPR3_LVDS0_MUX_CTL_MASK |
IOMUXC_GPR3_LVDS1_MUX_CTL_MASK |
IOMUXC_GPR3_HDMI_MUX_CTL_MASK);
}
static void setup_display_bx50v3(void)
{
struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
enable_videopll();
/* When a reset/reboot is performed the display power needs to be turned
* off for atleast 500ms. The boot time is ~300ms, we need to wait for
* an additional 200ms here. Unfortunately we use external PMIC for
* doing the reset, so can not differentiate between POR vs soft reset
*/
mdelay(200);
/* IPU1 DI0 clock is 455MHz / 7 = 65MHz */
setbits_le32(&mxc_ccm->cscmr2, MXC_CCM_CSCMR2_LDB_DI0_IPU_DIV);
/* Set LDB_DI0 as clock source for IPU_DI0 */
clrsetbits_le32(&mxc_ccm->chsccdr,
MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_MASK,
(CHSCCDR_CLK_SEL_LDB_DI0 <<
MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_OFFSET));
/* Turn on IPU LDB DI0 clocks */
setbits_le32(&mxc_ccm->CCGR3, MXC_CCM_CCGR3_LDB_DI0_MASK);
enable_ipu_clock();
writel(IOMUXC_GPR2_BGREF_RRMODE_EXTERNAL_RES |
IOMUXC_GPR2_DI0_VS_POLARITY_ACTIVE_LOW |
IOMUXC_GPR2_BIT_MAPPING_CH0_SPWG |
IOMUXC_GPR2_DATA_WIDTH_CH0_24BIT |
IOMUXC_GPR2_LVDS_CH0_MODE_ENABLED_DI0,
&iomux->gpr[2]);
clrsetbits_le32(&iomux->gpr[3],
IOMUXC_GPR3_LVDS0_MUX_CTL_MASK,
(IOMUXC_GPR3_MUX_SRC_IPU1_DI0 <<
IOMUXC_GPR3_LVDS0_MUX_CTL_OFFSET));
}
#endif /* CONFIG_VIDEO_IPUV3 */
/*
* Do not overwrite the console
* Use always serial for U-Boot console
*/
int overwrite_console(void)
{
return 1;
}
#define VPD_TYPE_INVALID 0x00
#define VPD_BLOCK_NETWORK 0x20
#define VPD_BLOCK_HWID 0x44
#define VPD_HAS_MAC1 0x1
#define VPD_HAS_MAC2 0x2
#define VPD_MAC_ADDRESS_LENGTH 6
struct vpd_cache {
bool is_read;
u8 product_id;
u8 has;
unsigned char mac1[VPD_MAC_ADDRESS_LENGTH];
unsigned char mac2[VPD_MAC_ADDRESS_LENGTH];
};
/*
* Extracts MAC and product information from the VPD.
*/
static int vpd_callback(struct vpd_cache *vpd, u8 id, u8 version, u8 type,
size_t size, u8 const *data)
{
if (id == VPD_BLOCK_HWID && version == 1 && type != VPD_TYPE_INVALID &&
size >= 1) {
vpd->product_id = data[0];
} else if (id == VPD_BLOCK_NETWORK && version == 1 &&
type != VPD_TYPE_INVALID) {
if (size >= 6) {
vpd->has |= VPD_HAS_MAC1;
memcpy(vpd->mac1, data, VPD_MAC_ADDRESS_LENGTH);
}
if (size >= 12) {
vpd->has |= VPD_HAS_MAC2;
memcpy(vpd->mac2, data + 6, VPD_MAC_ADDRESS_LENGTH);
}
}
return 0;
}
static void process_vpd(struct vpd_cache *vpd)
{
int fec_index = 0;
int i210_index = -1;
if (!vpd->is_read) {
printf("VPD wasn't read");
return;
}
if (vpd->has & VPD_HAS_MAC1)
eth_env_set_enetaddr_by_index("eth", fec_index, vpd->mac1);
env_set("ethact", "eth0");
switch (vpd->product_id) {
case VPD_PRODUCT_B450:
i210_index = 1;
break;
case VPD_PRODUCT_B650:
i210_index = 1;
break;
case VPD_PRODUCT_B850:
i210_index = 2;
break;
}
if (i210_index >= 0 && (vpd->has & VPD_HAS_MAC2))
eth_env_set_enetaddr_by_index("eth", i210_index, vpd->mac2);
}
static iomux_v3_cfg_t const misc_pads[] = {
MX6_PAD_KEY_ROW2__GPIO4_IO11 | MUX_PAD_CTRL(NO_PAD_CTRL),
MX6_PAD_EIM_A25__GPIO5_IO02 | MUX_PAD_CTRL(NC_PAD_CTRL),
MX6_PAD_EIM_CS0__GPIO2_IO23 | MUX_PAD_CTRL(NC_PAD_CTRL),
MX6_PAD_EIM_CS1__GPIO2_IO24 | MUX_PAD_CTRL(NC_PAD_CTRL),
MX6_PAD_EIM_OE__GPIO2_IO25 | MUX_PAD_CTRL(NC_PAD_CTRL),
MX6_PAD_EIM_BCLK__GPIO6_IO31 | MUX_PAD_CTRL(NC_PAD_CTRL),
MX6_PAD_GPIO_1__GPIO1_IO01 | MUX_PAD_CTRL(NC_PAD_CTRL),
MX6_PAD_GPIO_9__WDOG1_B | MUX_PAD_CTRL(NC_PAD_CTRL),
};
#define SUS_S3_OUT IMX_GPIO_NR(4, 11)
#define PWGIN_IN IMX_GPIO_NR(4, 14)
#define WIFI_EN IMX_GPIO_NR(6, 14)
int board_early_init_f(void)
{
imx_iomux_v3_setup_multiple_pads(misc_pads,
ARRAY_SIZE(misc_pads));
#if defined(CONFIG_VIDEO_IPUV3)
/* Set LDB clock to Video PLL */
select_ldb_di_clock_source(MXC_PLL5_CLK);
#endif
return 0;
}
int board_init(void)
{
if (!read_i2c_vpd(&vpd, vpd_callback)) {
int ret, rescan;
vpd.is_read = true;
productid = vpd.product_id;
ret = fdtdec_resetup(&rescan);
if (!ret && rescan) {
dm_uninit();
dm_init_and_scan(false);
}
}
gpio_request(SUS_S3_OUT, "sus_s3_out");
gpio_direction_output(SUS_S3_OUT, 1);
gpio_request(PWGIN_IN, "pwgin_in");
gpio_direction_input(PWGIN_IN);
gpio_request(WIFI_EN, "wifi_en");
gpio_direction_output(WIFI_EN, 1);
#if defined(CONFIG_VIDEO_IPUV3)
if (is_b850v3())
setup_display_b850v3();
else
setup_display_bx50v3();
#endif
/* address of boot parameters */
gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
return 0;
}
#ifdef CONFIG_CMD_BMODE
static const struct boot_mode board_boot_modes[] = {
/* 4 bit bus width */
{"sd2", MAKE_CFGVAL(0x40, 0x28, 0x00, 0x00)},
{"sd3", MAKE_CFGVAL(0x40, 0x30, 0x00, 0x00)},
{NULL, 0},
};
#endif
void pmic_init(void)
{
struct udevice *reg;
int ret, i;
static const char * const bucks[] = {
"bcore1",
"bcore2",
"bpro",
"bmem",
"bio",
"bperi",
};
for (i = 0; i < ARRAY_SIZE(bucks); i++) {
ret = regulator_get_by_devname(bucks[i], &reg);
if (reg < 0) {
printf("%s(): Unable to get regulator %s: %d\n",
__func__, bucks[i], ret);
continue;
}
regulator_set_mode(reg, DA9063_BUCKMODE_SYNC);
}
}
static void detect_boot_cause(void)
{
const char *cause = "POR";
if (is_b850v3())
if (!gpio_get_value(PWGIN_IN))
cause = "PM_WDOG";
env_set("bootcause", cause);
}
int board_late_init(void)
{
process_vpd(&vpd);
#ifdef CONFIG_CMD_BMODE
add_board_boot_modes(board_boot_modes);
#endif
if (is_b850v3())
env_set("videoargs", "video=DP-1:1024x768@60 video=HDMI-A-1:1024x768@60");
else
env_set("videoargs", "video=LVDS-1:1024x768@65");
detect_boot_cause();
/* board specific pmic init */
pmic_init();
check_time();
pci_init();
return 0;
}
/*
* Removes the 'eth[0-9]*addr' environment variable with the given index
*
* @param index [in] the index of the eth_device whose variable is to be removed
*/
static void remove_ethaddr_env_var(int index)
{
char env_var_name[9];
sprintf(env_var_name, index == 0 ? "ethaddr" : "eth%daddr", index);
env_set(env_var_name, NULL);
}
int last_stage_init(void)
{
int i;
/*
* Remove first three ethaddr which may have been created by
* function process_vpd().
*/
for (i = 0; i < 3; ++i)
remove_ethaddr_env_var(i);
return 0;
}
int checkboard(void)
{
printf("BOARD: %s\n", CONFIG_BOARD_NAME);
return 0;
}
#ifdef CONFIG_OF_BOARD_SETUP
int ft_board_setup(void *blob, struct bd_info *bd)
{
char *rtc_status = env_get("rtc_status");
fdt_setprop(blob, 0, "ge,boot-ver", version_string,
strlen(version_string) + 1);
fdt_setprop(blob, 0, "ge,rtc-status", rtc_status,
strlen(rtc_status) + 1);
return 0;
}
#endif
int board_fit_config_name_match(const char *name)
{
const char *machine = name;
if (!vpd.is_read)
return strcmp(name, "imx6q-bx50v3");
if (!strncmp(machine, "Boot ", 5))
machine += 5;
if (!strncmp(machine, "imx6q-", 6))
machine += 6;
switch (vpd.product_id) {
case VPD_PRODUCT_B450:
return strcasecmp(machine, "b450v3");
case VPD_PRODUCT_B650:
return strcasecmp(machine, "b650v3");
case VPD_PRODUCT_B850:
return strcasecmp(machine, "b850v3");
default:
return -1;
}
}
int embedded_dtb_select(void)
{
vpd.is_read = false;
return fdtdec_setup();
}
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