linux-kernel - Re: [PATCH 2/3] arm64: dts: qcom: sa8295p: Enable tertiary controller and its 4 USB ports

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Date: Tue, 6 Feb 2024 17:58:42 +0530
From: Krishna Kurapati PSSNV <quic_kriskura@...cinc.com>
To: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Konrad Dybcio
	<konrad.dybcio@...aro.org>
CC: Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Rob Herring
	<robh+dt@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Conor Dooley
	<conor+dt@...nel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-msm@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <quic_ppratap@...cinc.com>, <quic_jackp@...cinc.com>
Subject: Re: [PATCH 2/3] arm64: dts: qcom: sa8295p: Enable tertiary controller
 and its 4 USB ports



On 2/6/2024 5:43 PM, Dmitry Baryshkov wrote:
> On Tue, 6 Feb 2024 at 14:03, Krishna Kurapati <quic_kriskura@...cinc.com> wrote:
>>
>> Enable tertiary controller for SA8295P (based on SC8280XP).
>> Add pinctrl support for usb ports to provide VBUS to connected peripherals.
> 
> These are not just pinctrl entries. They hide VBUS regulators. Please
> implement them properly as corresponding vbus regulators.
> 

Hi Dmitry. Apologies, can you elaborate on your comment. I thought this 
implementation was fine as Konrad reviewed it in v13 [1]. I removed his 
RB tag as I made one change of dropping "_state" in labels.

[1]: 
https://lore.kernel.org/all/7141c2dd-9dcd-4186-ba83-829fe925e464@linaro.org/

Regards,
Krishna,

>>
>> Signed-off-by: Krishna Kurapati <quic_kriskura@...cinc.com>
>> ---
>>   arch/arm64/boot/dts/qcom/sa8295p-adp.dts | 49 ++++++++++++++++++++++++
>>   1 file changed, 49 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/qcom/sa8295p-adp.dts b/arch/arm64/boot/dts/qcom/sa8295p-adp.dts
>> index fd253942e5e5..6da444042f82 100644
>> --- a/arch/arm64/boot/dts/qcom/sa8295p-adp.dts
>> +++ b/arch/arm64/boot/dts/qcom/sa8295p-adp.dts
>> @@ -9,6 +9,7 @@
>>   #include <dt-bindings/gpio/gpio.h>
>>   #include <dt-bindings/regulator/qcom,rpmh-regulator.h>
>>   #include <dt-bindings/spmi/spmi.h>
>> +#include <dt-bindings/pinctrl/qcom,pmic-gpio.h>
>>
>>   #include "sa8540p.dtsi"
>>   #include "sa8540p-pmics.dtsi"
>> @@ -584,6 +585,16 @@ &usb_1_qmpphy {
>>          status = "okay";
>>   };
>>
>> +&usb_2 {
>> +       pinctrl-0 = <&usb2_en>,
>> +                   <&usb3_en>,
>> +                   <&usb4_en>,
>> +                   <&usb5_en>;
>> +       pinctrl-names = "default";
>> +
>> +       status = "okay";
>> +};
>> +
>>   &usb_2_hsphy0 {
>>          vdda-pll-supply = <&vreg_l5a>;
>>          vdda18-supply = <&vreg_l7g>;
>> @@ -636,6 +647,44 @@ &xo_board_clk {
>>
>>   /* PINCTRL */
>>
>> +&pmm8540c_gpios {
>> +       usb2_en: usb2-en-state {
>> +               pins = "gpio9";
>> +               function = "normal";
>> +               qcom,drive-strength = <PMIC_GPIO_STRENGTH_HIGH>;
>> +               output-high;
>> +               power-source = <0>;
>> +       };
>> +};
>> +
>> +&pmm8540e_gpios {
>> +       usb3_en: usb3-en-state {
>> +               pins = "gpio5";
>> +               function = "normal";
>> +               qcom,drive-strength = <PMIC_GPIO_STRENGTH_HIGH>;
>> +               output-high;
>> +               power-source = <0>;
>> +       };
>> +};
>> +
>> +&pmm8540g_gpios {
>> +       usb4_en: usb4-en-state {
>> +               pins = "gpio5";
>> +               function = "normal";
>> +               qcom,drive-strength = <PMIC_GPIO_STRENGTH_HIGH>;
>> +               output-high;
>> +               power-source = <0>;
>> +       };
>> +
>> +       usb5_en: usb5-en-state {
>> +               pins = "gpio9";
>> +               function = "normal";
>> +               qcom,drive-strength = <PMIC_GPIO_STRENGTH_HIGH>;
>> +               output-high;
>> +               power-source = <0>;
>> +       };
>> +};
>> +
>>   &tlmm {
>>          pcie2a_default: pcie2a-default-state {
>>                  clkreq-n-pins {
>> --
>> 2.34.1
>>
>>
> 
>