[coreboot-gerrit] Change in coreboot[master]: mv/google/kahlee/variants/baseboard/gpio.c: Reset I2C slaves
Richard Spiegel (Code Review)
gerrit at coreboot.org
Tue Sep 11 20:38:51 CEST 2018
Richard Spiegel has uploaded this change for review. ( https://review.coreboot.org/28575
Change subject: mv/google/kahlee/variants/baseboard/gpio.c: Reset I2C slaves
......................................................................
mv/google/kahlee/variants/baseboard/gpio.c: Reset I2C slaves
Use the new I2C slave reset function and reset all slaves connected to all
4 I2C.
BUG=b:114479395
TEST=Added debug code. Build and boot grunt. Examined output, confirmed
GPIO pins changing as required. Removed debug code.
Change-Id: Ia78ee5d5319d3c1a7daa9c56c81d435999b3a359
Signed-off-by: Richard Spiegel <richard.spiegel at silverbackltd.com>
---
M src/mainboard/google/kahlee/mainboard.c
M src/mainboard/google/kahlee/variants/baseboard/gpio.c
M src/mainboard/google/kahlee/variants/baseboard/include/baseboard/variants.h
3 files changed, 24 insertions(+), 6 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/75/28575/1
diff --git a/src/mainboard/google/kahlee/mainboard.c b/src/mainboard/google/kahlee/mainboard.c
index 2540bcd..c2e0f68 100644
--- a/src/mainboard/google/kahlee/mainboard.c
+++ b/src/mainboard/google/kahlee/mainboard.c
@@ -31,6 +31,7 @@
#include <variant/ec.h>
#include <variant/thermal.h>
#include <vendorcode/google/chromeos/chromeos.h>
+#include <gpio.h>
/***********************************************************
* These arrays set up the FCH PCI_INTR registers 0xC00/0xC01.
@@ -123,6 +124,7 @@
printk(BIOS_INFO, "Board ID: %d\n", boardid);
+ variant_reset_i2c_devices();
mainboard_ec_init();
gpios = variant_gpio_table(&num_gpios);
diff --git a/src/mainboard/google/kahlee/variants/baseboard/gpio.c b/src/mainboard/google/kahlee/variants/baseboard/gpio.c
index 75a8ab5..0b77e8f 100644
--- a/src/mainboard/google/kahlee/variants/baseboard/gpio.c
+++ b/src/mainboard/google/kahlee/variants/baseboard/gpio.c
@@ -62,9 +62,8 @@
/* GPIO_74 - LPC_CLK0_EC_R */
PAD_NF(GPIO_74, LPCCLK0, PULL_DOWN),
- /* GPIO_76 - EN_PP3300_TOUCHSCREEN */
- /* Init low to reset the chip */
- PAD_GPO(GPIO_76, LOW),
+ /* GPIO_85 - TOUCHSCREEN_RST (Active High) */
+ PAD_GPO(GPIO_85, LOW),
/* GPIO_92 - WLAN_PCIE_CLKREQ_3V3_ODL */
PAD_NF(GPIO_92, CLK_REQ0_L, PULL_UP),
@@ -164,9 +163,6 @@
/* GPIO_84 - HUB_RST (Active High) */
PAD_GPO(GPIO_84, LOW),
- /* GPIO_85 - TOUCHSCREEN_RST (Active High) */
- PAD_GPO(GPIO_85, LOW),
-
/* GPIO_86 - Unused (TP109) */
PAD_GPI(GPIO_86, PULL_UP),
@@ -252,6 +248,20 @@
PAD_NF(GPIO_148, I2C1_SDA, PULL_NONE),
};
+struct soc_amd_force_toggle i2c_pins[] = {
+ /* GPIO_85 - TOUCHSCREEN_RST (Active High) */
+ PAD_RESET_DEVICE(GPIO_85),
+
+ /* GPIO_113 - APU_I2C_SCL2 (Pen & Trackpad) */
+ PAD_RESET_I2C_SLAVE(GPIO_113),
+
+ /* GPIO_145 - PCH_I2C_AUDIO_SCL */
+ PAD_RESET_I2C_SLAVE(GPIO_145),
+
+ /* GPIO_147 - PCH_I2C_H1_TPM_SCL */
+ PAD_RESET_I2C_SLAVE(GPIO_147),
+};
+
const __weak
struct soc_amd_gpio *variant_early_gpio_table(size_t *size)
{
@@ -266,6 +276,11 @@
return gpio_set_stage_ram;
}
+__weak void variant_reset_i2c_devices(void)
+{
+ sb_reset_i2c_slaves(i2c_pins, ARRAY_SIZE(i2c_pins));
+}
+
/*
* This function is still needed for boards that sets gevents above 23
* that will generate SCI or SMI, such as kahlee. Normally this function
diff --git a/src/mainboard/google/kahlee/variants/baseboard/include/baseboard/variants.h b/src/mainboard/google/kahlee/variants/baseboard/include/baseboard/variants.h
index 6e89105..cc73d3e 100644
--- a/src/mainboard/google/kahlee/variants/baseboard/include/baseboard/variants.h
+++ b/src/mainboard/google/kahlee/variants/baseboard/include/baseboard/variants.h
@@ -30,6 +30,7 @@
const struct soc_amd_gpio *variant_early_gpio_table(size_t *size);
const struct soc_amd_gpio *variant_gpio_table(size_t *size);
void variant_romstage_entry(int s3_resume);
+void variant_reset_i2c_devices(void);
#if IS_ENABLED(CONFIG_HAVE_ACPI_RESUME)
void variant_mainboard_suspend_resume(void);
#endif
--
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Gerrit-Project: coreboot
Gerrit-Branch: master
Gerrit-MessageType: newchange
Gerrit-Change-Id: Ia78ee5d5319d3c1a7daa9c56c81d435999b3a359
Gerrit-Change-Number: 28575
Gerrit-PatchSet: 1
Gerrit-Owner: Richard Spiegel <richard.spiegel at silverbackltd.com>
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