On Fri, Nov 22, 2024 at 03:14:11AM +0100, Konrad Dybcio wrote:
> From: Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxxxx>
>
> The Surface Laptops have a Realtek RTS5261 SD Card reader connected
> over a Gen1x1 link to the PCIe3 host. Set up the necessary bits to
> make it functional.
>
> Signed-off-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxxxx>
> ---
> .../boot/dts/qcom/x1e80100-microsoft-romulus.dtsi | 63 ++++++++++++++++++++++
> 1 file changed, 63 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/qcom/x1e80100-microsoft-romulus.dtsi b/arch/arm64/boot/dts/qcom/x1e80100-microsoft-romulus.dtsi
> index 6aea8f3573e834273d56448da772edd27855efec..66a12b20b096baa7d5cf8c5fb65927b765aa18ff 100644
> --- a/arch/arm64/boot/dts/qcom/x1e80100-microsoft-romulus.dtsi
> +++ b/arch/arm64/boot/dts/qcom/x1e80100-microsoft-romulus.dtsi
> @@ -767,6 +767,27 @@ &mdss_dp3_phy {
> status = "okay";
> };
>
> +&pcie3 {
> + perst-gpios = <&tlmm 143 GPIO_ACTIVE_LOW>;
> + wake-gpios = <&tlmm 145 GPIO_ACTIVE_HIGH>;
> +
> + /* The power supply enable GPIOs are reserved by the secure firmware */
> +
> + pinctrl-0 = <&pcie3_default>;
> + pinctrl-names = "default";
> +
> + /* The RTS5261 chip on the other side only does Gen1x1 anyway */
> + max-link-speed = <1>;
> + status = "okay";
> +};
> +
> +&pcie3_phy {
> + vdda-phy-supply = <&vreg_l3c>;
> + vdda-pll-supply = <&vreg_l3e>;
> +
> + status = "okay";
> +};
> +
> &pcie4 {
> status = "okay";
> };
> @@ -797,6 +818,25 @@ &pcie6a_phy {
> status = "okay";
> };
>
> +&pm8550ve_2_gpios {
> + sde7_main_reg_en: sde7-main-reg-en-state {
> + pins = "gpio6";
> + function = "normal";
> + };
> +
> + sde7_aux_reg_en: sde7-aux-reg-en-state {
> + pins = "gpio8";
> + function = "normal";
> + };
> +};
> +
> +&pm8550ve_8_gpios {
> + vreg_12v_x8_en: 12v-x8-reg-en-state {
> + pins = "gpio8";
> + function = "normal";
> + };
> +};
These pinctrls don't seem to be used.
> +
> &pmc8380_3_gpios {
> edp_bl_en: edp-bl-en-state {
> pins = "gpio4";
> @@ -946,6 +986,29 @@ ssam_state: ssam-state-state {
> bias-disable;
> };
>
> + pcie3_default: pcie3-default-state {
> + perst-n-pins {
> + pins = "gpio143";
> + function = "gpio";
> + drive-strength = <2>;
> + bias-disable;
> + };
> +
> + clkreq-n-pins {
> + pins = "gpio144";
> + function = "pcie3_clk";
> + drive-strength = <2>;
> + bias-pull-up;
> + };
> +
> + wake-n-pins {
> + pins = "gpio145";
> + function = "gpio";
> + drive-strength = <2>;
> + bias-pull-up;
> + };
> + };
> +
> pcie6a_default: pcie6a-default-state {
> perst-n-pins {
> pins = "gpio152";
>
> --
> 2.47.0
>
--
With best wishes
Dmitry
