[coreboot-gerrit] New patch to review for coreboot: google/gru: pass the gpio power supply enable pin to bl31
Patrick Georgi (pgeorgi@google.com)
gerrit at coreboot.org
Thu Sep 22 18:33:47 CEST 2016
Patrick Georgi (pgeorgi at google.com) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/16719
-gerrit
commit 862cb79d0e083c5d5a96e66d0f1c559523e53c15
Author: Lin Huang <hl at rock-chips.com>
Date: Mon Aug 22 17:35:40 2016 -0700
google/gru: pass the gpio power supply enable pin to bl31
we need to disable some regulator when device into suspend,
it mean we need to pass some gpio to bl31, and disable these
gpios when bl31 run suspend function.
BRANCH=None
BUG=chrome-os-partner:56423
TEST=enter suspend, measure suspend gpio go to low
Change-Id: Ia0835e16f7e65de6dd24a892241f0af542ec5b4b
Signed-off-by: Patrick Georgi <pgeorgi at chromium.org>
Original-Commit-Id: 0f3332ef2136fd93f7faad579386ba5af003cf70
Original-Change-Id: I03d0407e0ef035823519a997534dcfea078a7ccd
Original-Signed-off-by: Lin Huang <hl at rock-chips.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/374046
Original-Commit-Ready: Caesar Wang <wxt at rock-chips.com>
Original-Tested-by: Caesar Wang <wxt at rock-chips.com>
Original-Reviewed-by: Julius Werner <jwerner at chromium.org>
---
src/mainboard/google/gru/board.h | 3 +++
src/mainboard/google/gru/mainboard.c | 43 ++++++++++++++++++++++++++++++++++++
2 files changed, 46 insertions(+)
diff --git a/src/mainboard/google/gru/board.h b/src/mainboard/google/gru/board.h
index 382c462..7880cca 100644
--- a/src/mainboard/google/gru/board.h
+++ b/src/mainboard/google/gru/board.h
@@ -25,6 +25,9 @@
#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_P30V_EN GPIO(0, B, 4)
+#define GPIO_P18V_AUDIO_PWREN GPIO(0, A, 2)
void setup_chromeos_gpios(void);
diff --git a/src/mainboard/google/gru/mainboard.c b/src/mainboard/google/gru/mainboard.c
index 8359ca4..902228b 100644
--- a/src/mainboard/google/gru/mainboard.c
+++ b/src/mainboard/google/gru/mainboard.c
@@ -43,6 +43,48 @@ static void configure_emmc(void)
rkclk_configure_emmc();
}
+static void register_gpio_suspend(void)
+{
+ /*
+ * these 3 pin to disable gpio2 ~ gpio4 1.5v, 1.8v, 3.3v power supply
+ * so need to shut down the power supply from high voltage to
+ * low voltage, and consider register_bl31() appends to the front off
+ * the list, we should register 1.5v enable pin to 3.3v enable pin
+ */
+ static struct bl31_gpio_param param_p15_en = {
+ .h = {
+ .type = PARAM_SUSPEND_GPIO,
+ },
+ .gpio = {
+ .polarity = BL31_GPIO_LEVEL_LOW,
+ },
+ };
+ param_p15_en.gpio.index = GET_GPIO_NUM(GPIO_P15V_EN);
+ register_bl31_param(¶m_p15_en.h);
+
+ static struct bl31_gpio_param param_p18_audio_en = {
+ .h = {
+ .type = PARAM_SUSPEND_GPIO,
+ },
+ .gpio = {
+ .polarity = BL31_GPIO_LEVEL_LOW,
+ },
+ };
+ param_p18_audio_en.gpio.index = GET_GPIO_NUM(GPIO_P18V_AUDIO_PWREN);
+ register_bl31_param(¶m_p18_audio_en.h);
+
+ static struct bl31_gpio_param param_p30_en = {
+ .h = {
+ .type = PARAM_SUSPEND_GPIO,
+ },
+ .gpio = {
+ .polarity = BL31_GPIO_LEVEL_LOW,
+ },
+ };
+ param_p30_en.gpio.index = GET_GPIO_NUM(GPIO_P30V_EN);
+ register_bl31_param(¶m_p30_en.h);
+}
+
static void register_reset_to_bl31(void)
{
static struct bl31_gpio_param param_reset = {
@@ -184,6 +226,7 @@ static void mainboard_init(device_t dev)
setup_usb();
register_reset_to_bl31();
register_poweroff_to_bl31();
+ register_gpio_suspend();
}
static void enable_backlight_booster(void)
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