Add support for gen2 pon register so "reboot bootloader" can
work on pixel3 and db845.
Cc: Andy Gross <agross@xxxxxxxxxx>
Cc: David Brown <david.brown@xxxxxxxxxx>
Cc: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
Cc: Amit Pundir <amit.pundir@xxxxxxxxxx>
Cc: Rob Herring <robh+dt@xxxxxxxxxx>
Cc: Mark Rutland <mark.rutland@xxxxxxx>
Cc: Sebastian Reichel <sre@xxxxxxxxxx>
Cc: linux-arm-msm@xxxxxxxxxxxxxxx
Cc: devicetree@xxxxxxxxxxxxxxx
Signed-off-by: John Stultz <john.stultz@xxxxxxxxxx>
---
arch/arm64/boot/dts/qcom/pm8998.dtsi | 2 +-
drivers/power/reset/qcom-pon.c | 15 ++++++++++++---
2 files changed, 13 insertions(+), 4 deletions(-)
diff --git a/arch/arm64/boot/dts/qcom/pm8998.dtsi b/arch/arm64/boot/dts/qcom/pm8998.dtsi
index d3ca35a940fb..051a52df80f9 100644
--- a/arch/arm64/boot/dts/qcom/pm8998.dtsi
+++ b/arch/arm64/boot/dts/qcom/pm8998.dtsi
@@ -39,7 +39,7 @@
#size-cells = <0>;
pm8998_pon: pon@800 {
- compatible = "qcom,pm8916-pon";
+ compatible = "qcom,pm8998-pon";
reg = <0x800>;
mode-bootloader = <0x2>;
diff --git a/drivers/power/reset/qcom-pon.c b/drivers/power/reset/qcom-pon.c
index 3fa1642d4c54..d0336a1612a4 100644
--- a/drivers/power/reset/qcom-pon.c
+++ b/drivers/power/reset/qcom-pon.c
@@ -14,11 +14,15 @@
#define PON_SOFT_RB_SPARE 0x8f
+#define GEN1_REASON_SHIFT 2
+#define GEN2_REASON_SHIFT 1
+
struct pm8916_pon {
struct device *dev;
struct regmap *regmap;
u32 baseaddr;
struct reboot_mode_driver reboot_mode;
+ long reason_shift;
};
static int pm8916_reboot_mode_write(struct reboot_mode_driver *reboot,
@@ -30,15 +34,18 @@ static int pm8916_reboot_mode_write(struct reboot_mode_driver *reboot,
ret = regmap_update_bits(pon->regmap,
pon->baseaddr + PON_SOFT_RB_SPARE,
- 0xfc, magic << 2);
+ 0xfc, magic << pon->reason_shift);
if (ret < 0)
dev_err(pon->dev, "update reboot mode bits failed\n");
return ret;
}
+static const struct of_device_id pm8916_pon_id_table[];
+
static int pm8916_pon_probe(struct platform_device *pdev)
{
+ const struct of_device_id *match;
struct pm8916_pon *pon;
int error;
@@ -60,6 +67,7 @@ static int pm8916_pon_probe(struct platform_device *pdev)
return error;
pon->reboot_mode.dev = &pdev->dev;
+ pon->reason_shift = of_device_get_match_data(&pdev->dev);
pon->reboot_mode.write = pm8916_reboot_mode_write;
error = devm_reboot_mode_register(&pdev->dev, &pon->reboot_mode);
if (error) {
@@ -73,8 +81,9 @@ static int pm8916_pon_probe(struct platform_device *pdev)
}
static const struct of_device_id pm8916_pon_id_table[] = {
- { .compatible = "qcom,pm8916-pon" },
- { .compatible = "qcom,pms405-pon" },
+ { .compatible = "qcom,pm8916-pon", .data = (void *)GEN1_REASON_SHIFT },
+ { .compatible = "qcom,pms405-pon", .data = (void *)GEN1_REASON_SHIFT },
+ { .compatible = "qcom,pm8998-pon", .data = (void *)GEN2_REASON_SHIFT },
{ }
};
MODULE_DEVICE_TABLE(of, pm8916_pon_id_table);
--
2.17.1
