From: Bjorn Andersson <bjorn.andersson@linaro.org>
To: John Stultz <john.stultz@linaro.org>
Cc: lkml <linux-kernel@vger.kernel.org>,
Andy Gross <agross@kernel.org>,
David Brown <david.brown@linaro.org>,
Amit Pundir <amit.pundir@linaro.org>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Sebastian Reichel <sre@kernel.org>,
linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org
Subject: Re: [RFC][PATCH 2/2] reset: qcom-pon: Add support for gen2 pon
Date: Fri, 31 May 2019 16:53:02 -0700 [thread overview]
Message-ID: <20190531235302.GD25597@minitux> (raw)
In-Reply-To: <20190531234734.102842-2-john.stultz@linaro.org>
On Fri 31 May 16:47 PDT 2019, John Stultz wrote:
> Add support for gen2 pon register so "reboot bootloader" can
> work on pixel3 and db845.
>
> Cc: Andy Gross <agross@kernel.org>
> Cc: David Brown <david.brown@linaro.org>
> Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
> Cc: Amit Pundir <amit.pundir@linaro.org>
> Cc: Rob Herring <robh+dt@kernel.org>
> Cc: Mark Rutland <mark.rutland@arm.com>
> Cc: Sebastian Reichel <sre@kernel.org>
> Cc: linux-arm-msm@vger.kernel.org
> Cc: devicetree@vger.kernel.org
> Signed-off-by: John Stultz <john.stultz@linaro.org>
> ---
> 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>;
We want to take this through arm-soc and the rest through Sebastian's
tree, so please provide the dts update in a separate commit.
Apart from that this looks good!
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Regards,
Bjorn
> 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
>
next prev parent reply other threads:[~2019-05-31 23:53 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-31 23:47 [RFC][PATCH 1/2] dt-bindings: power: reset: qcom: Add qcom,pm8998-pon compatability line John Stultz
2019-05-31 23:47 ` [RFC][PATCH 2/2] reset: qcom-pon: Add support for gen2 pon John Stultz
2019-05-31 23:53 ` Bjorn Andersson [this message]
2019-06-01 0:05 ` John Stultz
2019-05-31 23:50 ` [RFC][PATCH 1/2] dt-bindings: power: reset: qcom: Add qcom,pm8998-pon compatability line Bjorn Andersson
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