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-rw-r--r--src/mainboard/google/gru/Kconfig5
-rw-r--r--src/mainboard/google/gru/board.h26
-rw-r--r--src/mainboard/google/gru/bootblock.c31
-rw-r--r--src/mainboard/google/gru/mainboard.c44
-rw-r--r--src/mainboard/google/gru/pwm_regulator.c27
-rw-r--r--src/mainboard/google/gru/romstage.c11
6 files changed, 101 insertions, 43 deletions
diff --git a/src/mainboard/google/gru/Kconfig b/src/mainboard/google/gru/Kconfig
index 9243251fbb..b66dab48df 100644
--- a/src/mainboard/google/gru/Kconfig
+++ b/src/mainboard/google/gru/Kconfig
@@ -75,6 +75,11 @@ config DRIVER_TPM_I2C_ADDR
hex
default 0x20
+config DRIVER_TPM_SPI_BUS
+ hex
+ default 0x2 if BOARD_GOOGLE_SCARLET
+ default 0x0
+
config CONSOLE_SERIAL_UART_ADDRESS
hex
depends on DRIVERS_UART
diff --git a/src/mainboard/google/gru/board.h b/src/mainboard/google/gru/board.h
index 8acbe34c92..f240dcf0ab 100644
--- a/src/mainboard/google/gru/board.h
+++ b/src/mainboard/google/gru/board.h
@@ -17,18 +17,36 @@
#ifndef __COREBOOT_SRC_MAINBOARD_GOOGLE_GRU_BOARD_H
#define __COREBOOT_SRC_MAINBOARD_GOOGLE_GRU_BOARD_H
+#include <assert.h>
#include <gpio.h>
+#define GPIO_POWEROFF GPIO(1, A, 6)
+#define GPIO_RESET GPIO(0, B, 3)
+#define GPIO_SDMMC_PWR GPIO(4, D, 5)
+
+#if IS_ENABLED(CONFIG_BOARD_GOOGLE_SCARLET)
+#define GPIO_BACKLIGHT GPIO(4, C, 5)
+#define GPIO_EC_IN_RW GPIO(0, A, 1)
+#define GPIO_EC_IRQ GPIO(1, C, 2)
+#define GPIO_P15V_EN dead_code_t(gpio_t, "PP1500 doesn't exist on Scarlet")
+#define GPIO_P18V_AUDIO_PWREN dead_code_t(gpio_t, "doesn't exist on Scarlet")
+#define GPIO_P30V_EN dead_code_t(gpio_t, "PP3000 doesn't exist on Scarlet")
+#define GPIO_TP_RST_L dead_code_t(gpio_t, "don't need TP_RST_L on Scarlet")
+#define GPIO_TPM_IRQ GPIO(1, C, 1)
+#define GPIO_WLAN_RST_L dead_code_t(gpio_t, "no WLAN reset on Scarlet in FW")
+#define GPIO_WP GPIO(0, B, 5)
+#else
#define GPIO_BACKLIGHT GPIO(1, C, 1)
#define GPIO_EC_IN_RW GPIO(3, B, 0)
#define GPIO_EC_IRQ GPIO(0, A, 1)
-#define GPIO_POWEROFF GPIO(1, A, 6)
-#define GPIO_RESET GPIO(0, B, 3)
-#define GPIO_WP GPIO(1, C, 2)
#define GPIO_P15V_EN GPIO(0, B, 2)
+#define GPIO_P18V_AUDIO_PWREN GPIO(0, A, 2)
#define GPIO_P30V_EN GPIO(0, B, 4)
-#define GPIO_P18V_AUDIO_PWREN GPIO(0, A, 2)
+#define GPIO_TP_RST_L GPIO(3, B, 4) /* may also be an I2C pull-up enable */
#define GPIO_TPM_IRQ GPIO(0, A, 5)
+#define GPIO_WLAN_RST_L GPIO(1, B, 3)
+#define GPIO_WP GPIO(1, C, 2)
+#endif
void setup_chromeos_gpios(void);
diff --git a/src/mainboard/google/gru/bootblock.c b/src/mainboard/google/gru/bootblock.c
index 4320fcedad..7359f2a302 100644
--- a/src/mainboard/google/gru/bootblock.c
+++ b/src/mainboard/google/gru/bootblock.c
@@ -44,12 +44,12 @@ void bootblock_mainboard_early_init(void)
*/
write32(&rk3399_grf->io_vsel, RK_SETBITS(1 << 0));
- /*
- * Let's enable these power rails here, we are already running the SPI
- * Flash based code.
- */
- gpio_output(GPIO(0, B, 2), 1); /* PP1500_EN */
- gpio_output(GPIO(0, B, 4), 1); /* PP3000_EN */
+ if (!IS_ENABLED(CONFIG_BOARD_GOOGLE_SCARLET)) {
+ /* Enable rails powering GPIO blocks, among other things.
+ These are EC-controlled on Scarlet and already on. */
+ gpio_output(GPIO_P15V_EN, 1);
+ gpio_output(GPIO_P30V_EN, 1);
+ }
#if IS_ENABLED(CONFIG_DRIVERS_UART)
_Static_assert(CONFIG_CONSOLE_SERIAL_UART_ADDRESS == UART2_BASE,
@@ -92,14 +92,21 @@ static void configure_ec(void)
static void configure_tpm(void)
{
if (IS_ENABLED(CONFIG_GRU_HAS_TPM2)) {
- gpio_input(GPIO(3, A, 4)); /* SPI0_MISO remove pull-up */
- gpio_input(GPIO(3, A, 5)); /* SPI0_MOSI remove pull-up */
- gpio_input(GPIO(3, A, 6)); /* SPI0_CLK remove pull-up */
- gpio_input_pullup(GPIO(3, A, 7)); /* SPI0_CS confirm */
-
rockchip_spi_init(CONFIG_DRIVER_TPM_SPI_BUS, 1500*KHz);
- write32(&rk3399_grf->iomux_spi0, IOMUX_SPI0);
+ if (IS_ENABLED(CONFIG_BOARD_GOOGLE_SCARLET)) {
+ gpio_input(GPIO(2, B, 1)); /* SPI2_MISO no-pull */
+ gpio_input(GPIO(2, B, 2)); /* SPI2_MOSI no-pull */
+ gpio_input(GPIO(2, B, 3)); /* SPI2_CLK no-pull */
+ gpio_input_pullup(GPIO(2, B, 4)); /* SPI2_CS */
+ write32(&rk3399_grf->iomux_spi2, IOMUX_SPI2);
+ } else {
+ gpio_input(GPIO(3, A, 4)); /* SPI0_MISO no-pull */
+ gpio_input(GPIO(3, A, 5)); /* SPI0_MOSI no-pull */
+ gpio_input(GPIO(3, A, 6)); /* SPI0_CLK no-pull */
+ gpio_input_pullup(GPIO(3, A, 7)); /* SPI0_CS */
+ write32(&rk3399_grf->iomux_spi0, IOMUX_SPI0);
+ }
gpio_input_irq(GPIO_TPM_IRQ, IRQ_TYPE_EDGE_RISING);
} else {
diff --git a/src/mainboard/google/gru/mainboard.c b/src/mainboard/google/gru/mainboard.c
index fa127edf82..2542d74106 100644
--- a/src/mainboard/google/gru/mainboard.c
+++ b/src/mainboard/google/gru/mainboard.c
@@ -34,21 +34,21 @@
/*
* We have to drive the stronger pull-up within 1 second of powering up the
- * touchpad to prevent its firmware from falling into recovery.
+ * touchpad to prevent its firmware from falling into recovery. Not on Scarlet.
*/
static void configure_touchpad(void)
{
- gpio_output(GPIO(3, B, 4), 1); /* TP's I2C pull-up rail */
+ gpio_output(GPIO_TP_RST_L, 1); /* TP's I2C pull-up rail */
}
/*
* Wifi's PDN/RST line is pulled down by its (unpowered) voltage rails, but
* this reset pin is pulled up by default. Let's drive it low as early as we
- * can.
+ * can. Scarlet uses a different WiFi chip that doesn't have this pin anymore.
*/
-static void deassert_wifi_power(void)
+static void assert_wifi_reset(void)
{
- gpio_output(GPIO(1, B, 3), 0); /* Assert WLAN_MODULE_RST# */
+ gpio_output(GPIO_WLAN_RST_L, 0); /* Assert WLAN_MODULE_RST# */
}
static void configure_emmc(void)
@@ -234,11 +234,21 @@ static void configure_codec(void)
static void configure_display(void)
{
- /* set pinmux for edp HPD*/
- gpio_input_pulldown(GPIO(4, C, 7));
- write32(&rk3399_grf->iomux_edp_hotplug, IOMUX_EDP_HOTPLUG);
-
- gpio_output(GPIO(4, D, 3), 1); /* CPU3_EDP_VDDEN for P3.3V_DISP */
+ if (IS_ENABLED(CONFIG_BOARD_GOOGLE_SCARLET)) {
+ gpio_output(GPIO(4, D, 1), 0); /* DISPLAY_RST_L */
+ gpio_output(GPIO(4, D, 3), 1); /* PPVARP_LCD */
+ mdelay(10);
+ gpio_output(GPIO(4, D, 4), 1); /* PPVARN_LCD */
+ mdelay(20 + 2); /* add 2ms for bias rise time */
+ gpio_output(GPIO(4, D, 1), 1); /* DISPLAY_RST_L */
+ mdelay(30);
+ } else {
+ /* set pinmux for edp HPD */
+ gpio_input_pulldown(GPIO(4, C, 7));
+ write32(&rk3399_grf->iomux_edp_hotplug, IOMUX_EDP_HOTPLUG);
+
+ gpio_output(GPIO(4, D, 3), 1); /* P3.3V_DISP */
+ }
}
static void usb_power_cycle(int port)
@@ -321,18 +331,20 @@ static void setup_usb(int port)
static void mainboard_init(device_t dev)
{
- deassert_wifi_power();
- configure_touchpad();
configure_sdmmc();
configure_emmc();
configure_codec();
- configure_display();
+ if (display_init_required())
+ configure_display();
setup_usb(0);
- if (!IS_ENABLED(CONFIG_BOARD_GOOGLE_SCARLET))
- setup_usb(1);
+ if (!IS_ENABLED(CONFIG_BOARD_GOOGLE_SCARLET)) {
+ assert_wifi_reset(); /* Scarlet: no WIFI_PD# line */
+ configure_touchpad(); /* Scarlet: works differently */
+ setup_usb(1); /* Scarlet: only one USB port */
+ register_gpio_suspend(); /* Scarlet: all EC-controlled */
+ }
register_reset_to_bl31();
register_poweroff_to_bl31();
- register_gpio_suspend();
register_apio_suspend();
}
diff --git a/src/mainboard/google/gru/pwm_regulator.c b/src/mainboard/google/gru/pwm_regulator.c
index b85f41ff45..696f09a206 100644
--- a/src/mainboard/google/gru/pwm_regulator.c
+++ b/src/mainboard/google/gru/pwm_regulator.c
@@ -47,10 +47,23 @@ int pwm_design_voltage[][2] = {
[PWM_REGULATOR_CENTERLOG] = {7994, 10499}
};
+int pwm_enum_to_pwm_number[] = {
+ [PWM_REGULATOR_GPU] = 0,
+ [PWM_REGULATOR_LIT] = 2,
+#if IS_ENABLED(CONFIG_BOARD_GOOGLE_SCARLET)
+ [PWM_REGULATOR_BIG] = 3,
+ [PWM_REGULATOR_CENTERLOG] = -1, /* fixed regulator on Scarlet */
+#else
+ [PWM_REGULATOR_BIG] = 1,
+ [PWM_REGULATOR_CENTERLOG] = 3,
+#endif
+};
+
void pwm_regulator_configure(enum pwm_regulator pwm, int millivolt)
{
int duty_ns, voltage_max, voltage_min;
int voltage = millivolt * 10; /* for higer calculation accuracy */
+ int pwm_number = pwm_enum_to_pwm_number[pwm];
voltage_min = pwm_design_voltage[pwm][0];
voltage_max = pwm_design_voltage[pwm][1];
@@ -75,24 +88,26 @@ void pwm_regulator_configure(enum pwm_regulator pwm, int millivolt)
duty_ns = PWM_PERIOD * (voltage_max - voltage)
/ (voltage_max - voltage_min);
- pwm_init(pwm, PWM_PERIOD, duty_ns);
+ pwm_init(pwm_number, PWM_PERIOD, duty_ns);
- switch (pwm) {
- case PWM_REGULATOR_GPU:
+ switch (pwm_number) {
+ case 0:
gpio_input(GPIO(4, C, 2)); /* PWM0 remove pull-down */
write32(&rk3399_grf->iomux_pwm_0, IOMUX_PWM_0);
break;
- case PWM_REGULATOR_BIG:
+ case 1:
gpio_input(GPIO(4, C, 6)); /* PWM1 remove pull-down */
write32(&rk3399_grf->iomux_pwm_1, IOMUX_PWM_1);
break;
- case PWM_REGULATOR_LIT:
+ case 2:
gpio_input(GPIO(1, C, 3)); /* PWM2 remove pull-down */
write32(&rk3399_pmugrf->iomux_pwm_2, IOMUX_PWM_2);
break;
- case PWM_REGULATOR_CENTERLOG:
+ case 3:
gpio_input(GPIO(0, A, 6)); /* PWM3 remove pull-down */
write32(&rk3399_pmugrf->iomux_pwm_3a, IOMUX_PWM_3_A);
break;
+ default:
+ die("incorrect board configuration");
}
}
diff --git a/src/mainboard/google/gru/romstage.c b/src/mainboard/google/gru/romstage.c
index d644f7d7c2..bde61b28aa 100644
--- a/src/mainboard/google/gru/romstage.c
+++ b/src/mainboard/google/gru/romstage.c
@@ -33,6 +33,7 @@
#include <soc/usb.h>
#include <stdlib.h>
+#include "board.h"
#include "pwm_regulator.h"
static void init_dvs_outputs(void)
@@ -40,10 +41,11 @@ static void init_dvs_outputs(void)
pwm_regulator_configure(PWM_REGULATOR_GPU, 900);
pwm_regulator_configure(PWM_REGULATOR_BIG, 900);
- /* Kevin's logic rail has some ripple, so up the voltage a bit */
+ /* Kevin's logic rail has some ripple, so up the voltage a bit. Scarlet
+ uses a fixed 900mV regulator for centerlogic. */
if (IS_ENABLED(CONFIG_BOARD_GOOGLE_KEVIN))
pwm_regulator_configure(PWM_REGULATOR_CENTERLOG, 925);
- else
+ else if (!IS_ENABLED(CONFIG_BOARD_GOOGLE_SCARLET))
pwm_regulator_configure(PWM_REGULATOR_CENTERLOG, 900);
/* Allow time for the regulators to settle */
@@ -52,9 +54,8 @@ static void init_dvs_outputs(void)
static void prepare_sdmmc(void)
{
- /* Enable main SD rail early to allow ramp time before enabling SDIO
- * rail. */
- gpio_output(GPIO(4, D, 5), 1); /* SDMMC_PWR_EN */
+ /* Enable main SD rail early to allow ramp time before powering SDIO. */
+ gpio_output(GPIO_SDMMC_PWR, 1);
}
static void prepare_usb(void)
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-03 04:07:28 +0000