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drivers/pinctrl: it8xxx2: Fix I2C5 pin leakage

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When setting these pins as I2C alternate mode and then setting
GCR7 or func3-ext of GPIO extended, it will cause leakage.
In order to prevent leakage, it must be set to GPIO INPUT mode.

Signed-off-by: Tim Lin <tim2.lin@ite.corp-partner.google.com>
This commit is contained in:
Tim Lin 2024-07-10 19:02:36 +08:00 committed by Carles Cufí
parent 5368d7d0df
commit 9bcf33bbc4
1 changed files with 15 additions and 0 deletions
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15
drivers/pinctrl/pinctrl_ite_it8xxx2.c
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@ -6,6 +6,7 @@
#define DT_DRV_COMPAT ite_it8xxx2_pinctrl_func
#include <zephyr/drivers/gpio.h>
#include <zephyr/drivers/pinctrl.h>
#include <zephyr/logging/log.h>
@ -365,6 +366,20 @@ static int pinctrl_it8xxx2_init(const struct device *dev)
gpio_base->GPIO_GCR &= ~IT8XXX2_GPIO_LPCRSTEN;
#ifdef CONFIG_SOC_IT8XXX2_REG_SET_V2
#if defined(CONFIG_I2C_ITE_ENHANCE) && DT_NODE_HAS_STATUS(DT_NODELABEL(i2c5), okay)
const struct gpio_dt_spec scl_gpios = GPIO_DT_SPEC_GET(DT_NODELABEL(i2c5), scl_gpios);
const struct gpio_dt_spec sda_gpios = GPIO_DT_SPEC_GET(DT_NODELABEL(i2c5), sda_gpios);
/*
* When setting these pins as I2C alternate mode and then setting
* GCR7 or func3-ext of GPIO extended, it will cause leakage.
* In order to prevent leakage, it must be set to GPIO INPUT mode.
*/
/* Set I2C5 SCL as GPIO input to prevent leakage */
gpio_pin_configure_dt(&scl_gpios, GPIO_INPUT);
/* Set I2C5 SDA as GPIO input to prevent leakage */
gpio_pin_configure_dt(&sda_gpios, GPIO_INPUT);
#endif
/*
* Swap the default I2C2 SMCLK2/SMDAT2 pins from GPC7/GPD0 to GPF6/GPF7,
* and I2C3 SMCLK3/SMDAT3 pins from GPB2/GPB5 to GPH1/GPH2,