[RK3568 Android11] RK809开机短按时间设置和长按电源键设置

一、长按电源键

在产品设计中，为防备系统跑挂了，需要设计通过长按电源键实现硬关机和重启。这里简单介绍RK809实现长按电源键关机和重启功能。

通过查阅RK809手册PMIC_PWEON_KEY寄存器，可以设置长按电源键PMIC的响应事件有两种：关机和重启。响应时间有6s、8s、10s、12s。

分析驱动代码rk8xx.c可以发现代码中配好了设备树接口，只需要在设备树中添加相应的属性即可设置长按电源键PMIC的响应时间和响应事件。

//  u-boot/drivers/power/pmic/rk8xx.c
static int rk8xx_ofdata_to_platdata(struct udevice *dev)
{struct rk8xx_priv *rk8xx = dev_get_priv(dev);u32 interrupt, phandle, val;int ret;phandle = dev_read_u32_default(dev, "interrupt-parent", -ENODATA);if (phandle == -ENODATA) {printf("Read 'interrupt-parent' failed, ret=%d\n", phandle);return phandle;}ret = dev_read_u32_array(dev, "interrupts", &interrupt, 1);if (ret) {printf("Read 'interrupts' failed, ret=%d\n", ret);return ret;}rk8xx->irq = phandle_gpio_to_irq(phandle, interrupt);if (rk8xx->irq < 0) {printf("Failed to request rk8xx irq, ret=%d\n", rk8xx->irq);return rk8xx->irq;}val = dev_read_u32_default(dev, "long-press-off-time-sec", 0);   //解析long-press-off-time-sec属性if (val <= 6)rk8xx->lp_off_time = RK8XX_LP_TIME_6S;else if (val <= 8)rk8xx->lp_off_time = RK8XX_LP_TIME_8S;else if (val <= 10)rk8xx->lp_off_time = RK8XX_LP_TIME_10S;elserk8xx->lp_off_time = RK8XX_LP_TIME_12S;val = dev_read_u32_default(dev, "long-press-restart", 0);   //解析long-press-restart属性if (val)rk8xx->lp_action = RK8XX_LP_RESTART;elserk8xx->lp_action = RK8XX_LP_OFF;val = dev_read_u32_default(dev, "not-save-power-en", 0);rk8xx->not_save_power_en = val;return 0;
}

根据驱动，只需要在dts文件中的rk809节点中添加long-press-off-time-sec和long-press-restart属性。

rk809: pmic@20 {compatible = "rockchip,rk809";reg = <0x20>;...long-press-off-time-sec = <6>;  //长按电源键PMIC响应时间，可以设置6s，8s，10s，12slong-press-restart = <1>;      //长按电源键PMIC响应事件，0：关机  1：重启...pwrkey {status = "okay";};

二、短按开机电源键响应时间

同样通过RK809手册发现短按电源键开机的响应时间可以设置500ms和100ms。驱动中每发现有设置该功能的接口，可以仿照长按电源键的响应时间来实现短按电源键开机的响应时间。

1）头文件添加寄存器地址

diff --git a/u-boot/include/power/rk8xx_pmic.h b/u-boot/include/power/rk8xx_pmic.h
index aa51e887e4..7274a7dc46 100644
--- a/u-boot/include/power/rk8xx_pmic.h
+++ b/u-boot/include/power/rk8xx_pmic.h
@@ -219,6 +219,9 @@ enum {#define RK8XX_DEVCTRL_REG      0x4b#define RK817_PWRON_KEY                0xf7
+#define RK8XX_ON_TIME       BIT(7)
+#define RK8XX_ON_TIME_500MS (0 << 7)
+#define RK8XX_ON_TIME_100MS (1 << 7)#define RK8XX_LP_ACTION_MSK    BIT(6)#define RK8XX_LP_OFF           (0 << 6)#define RK8XX_LP_RESTART       (1 << 6)
@@ -282,6 +285,7 @@ struct rk8xx_priv {struct spi_slave *slave;int variant;int irq;
+       int on_time_ms;int lp_off_time;int lp_action;uint8_t sleep_pin;

2）代码功能实现

diff --git a/u-boot/drivers/power/pmic/rk8xx.c b/u-boot/drivers/power/pmic/rk8xx.c
index b11695562b..e2e4c66566 100644
--- a/u-boot/drivers/power/pmic/rk8xx.c
+++ b/u-boot/drivers/power/pmic/rk8xx.c
@@ -404,6 +404,12 @@ static int rk8xx_ofdata_to_platdata(struct udevice *dev)rk8xx->lp_action = RK8XX_LP_RESTART;elserk8xx->lp_action = RK8XX_LP_OFF;
+
+       val = dev_read_u32_default(dev, "press-on-time", 0);
+       if(val)
+               rk8xx->on_time_ms = RK8XX_ON_TIME_100MS;
+       else
+               rk8xx->on_time_ms = RK8XX_ON_TIME_500MS;val = dev_read_u32_default(dev, "not-save-power-en", 0);rk8xx->not_save_power_en = val;
@@ -478,7 +484,7 @@ static int rk8xx_probe(struct udevice *dev)int ret = 0, i, show_variant;uint8_t msb, lsb, id_msb, id_lsb;uint8_t on_source = 0, off_source = 0;
-       uint8_t pwron_key = 0, lp_off_msk = 0, lp_act_msk = 0;
+       uint8_t pwron_key = 0, on_time = 0, lp_off_msk = 0, lp_act_msk = 0;uint8_t power_en0, power_en1, power_en2, power_en3;uint8_t on, off;uint8_t value;
@@ -533,6 +539,7 @@ static int rk8xx_probe(struct udevice *dev)on_source = RK817_ON_SOURCE;off_source = RK817_OFF_SOURCE;pwron_key = RK817_PWRON_KEY;
+               on_time = RK8XX_ON_TIME;lp_off_msk = RK8XX_LP_OFF_MSK;lp_act_msk = RK8XX_LP_ACTION_MSK;init_data = rk817_init_reg;
@@ -601,7 +608,9 @@ static int rk8xx_probe(struct udevice *dev)ret = rk8xx_read(dev, pwron_key, &value, 1);if (ret)return ret;
-               value &= ~(lp_off_msk | lp_act_msk);
+               value &= ~(on_time | lp_off_msk | lp_act_msk);
+               if (on_time)
+                       value |= priv->on_time_ms;if (lp_off_

3）设备树中选择响应时间

diff --git a/kernel/arch/arm64/boot/dts/rockchip/t5.dts b/kernel/arch/arm64/boot/dts/rockchip/t5.dts
index bd32081563..86b6cc9f6a 100755
--- a/kernel/arch/arm64/boot/dts/rockchip/t5.dts
+++ b/kernel/arch/arm64/boot/dts/rockchip/t5.dts
@@ -864,6 +864,7 @@pmic-reset-func = <0>;/* not save the PMIC_POWER_EN register in uboot */not-save-power-en = <1>;
+               press-on-time = <0>;   // 0: 500ms   1: 100mslong-press-off-time-sec = <6>;long-press-restart = <1>;

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[RK3568 Android11] RK809开机短按时间设置和长按电源键设置

一、长按电源键

二、短按开机电源键响应时间

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