Re: [PATCH v3 2/3] arm64: dts: qcom: Add base qrb4210-rb2 board dts

[Konrad Dybcio <konrad.dybcio@linaro.org>]

On 11.04.2023 09:28, Bhupesh Sharma wrote:
> Add DTS for Qualcomm qrb4210-rb2 board which uses SM4250 SoC.
> 
> This adds debug uart, emmc, uSD and tlmm support along with
> regulators found on this board.
> 
> Also defines the 'xo_board' and 'sleep_clk' frequencies for
> this board.
> 
> Signed-off-by: Bhupesh Sharma <bhupesh.sharma@linaro.org>
> ---
>  arch/arm64/boot/dts/qcom/Makefile        |   1 +
>  arch/arm64/boot/dts/qcom/qrb4210-rb2.dts | 223 +++++++++++++++++++++++
>  2 files changed, 224 insertions(+)
>  create mode 100644 arch/arm64/boot/dts/qcom/qrb4210-rb2.dts
> 
> diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
> index e0e2def48470..d42c59572ace 100644
> --- a/arch/arm64/boot/dts/qcom/Makefile
> +++ b/arch/arm64/boot/dts/qcom/Makefile
> @@ -74,6 +74,7 @@ dtb-$(CONFIG_ARCH_QCOM)	+= qcs404-evb-1000.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= qcs404-evb-4000.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= qdu1000-idp.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= qrb2210-rb1.dtb
> +dtb-$(CONFIG_ARCH_QCOM)	+= qrb4210-rb2.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= qrb5165-rb5.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= qrb5165-rb5-vision-mezzanine.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= qru1000-idp.dtb
> diff --git a/arch/arm64/boot/dts/qcom/qrb4210-rb2.dts b/arch/arm64/boot/dts/qcom/qrb4210-rb2.dts
> new file mode 100644
> index 000000000000..c9c6e3787462
> --- /dev/null
> +++ b/arch/arm64/boot/dts/qcom/qrb4210-rb2.dts
> @@ -0,0 +1,223 @@
> +// SPDX-License-Identifier: BSD-3-Clause
> +/*
> + * Copyright (c) 2023, Linaro Limited
> + */
> +
> +/dts-v1/;
> +
> +#include "sm4250.dtsi"
> +
> +/ {
> +	model = "Qualcomm Technologies, Inc. QRB4210 RB2";
> +	compatible = "qcom,qrb4210-rb2", "qcom,qrb4210", "qcom,sm4250";
> +
> +	aliases {
> +		serial0 = &uart4;
> +	};
> +
> +	chosen {
> +		stdout-path = "serial0:115200n8";
> +	};
> +
> +	vph_pwr: vph-pwr-regulator {
> +		compatible = "regulator-fixed";
> +		regulator-name = "vph_pwr";
> +		regulator-min-microvolt = <3700000>;
> +		regulator-max-microvolt = <3700000>;
> +
> +		regulator-always-on;
> +		regulator-boot-on;
> +	};
> +};
> +
> +&qupv3_id_0 {
> +	status = "okay";
> +};
> +
> +&rpm_requests {
> +	regulators {
> +		compatible = "qcom,rpm-pm6125-regulators";
> +
> +		vdd-s1-supply = <&vph_pwr>;
> +		vdd-s2-supply = <&vph_pwr>;
> +		vdd-s3-supply = <&vph_pwr>;
> +		vdd-s4-supply = <&vph_pwr>;
> +		vdd-s5-supply = <&vph_pwr>;
> +		vdd-s6-supply = <&vph_pwr>;
> +		vdd-s7-supply = <&vph_pwr>;
> +		vdd-s8-supply = <&vph_pwr>;
> +		vdd-s9-supply = <&vph_pwr>;
> +		vdd-s10-supply = <&vph_pwr>;
> +
> +		vdd-l1-l7-l17-l18-supply = <&vreg_s6a_1p352>;
> +		vdd-l2-l3-l4-supply = <&vreg_s6a_1p352>;
> +		vdd-l5-l15-l19-l20-l21-l22-supply = <&vph_pwr>;
> +		vdd-l6-l8-supply = <&vreg_s5a_0p848>;
> +		vdd-l9-l11-supply = <&vreg_s7a_2p04>;
> +		vdd-l10-l13-l14-supply = <&vreg_s7a_2p04>;
> +		vdd-l12-l16-supply = <&vreg_s7a_2p04>;
> +		vdd-l23-l24-supply = <&vph_pwr>;
> +
> +		vreg_s5a_0p848: s5 {
I think going with pmicname_regulatorname (e.g. pm6125_s5) here
and adding:

regulator-name = "vreg_s5a_0p848"

would make this more maintainable.

[...]

> +&sdhc_1 {
> +	vmmc-supply = <&vreg_l24a_2p96>;
> +	vqmmc-supply = <&vreg_l11a_1p8>;
> +	no-sdio;
> +	non-removable;
> +
> +	status = "okay";
> +};
> +
> +&sdhc_2 {
> +	cd-gpios = <&tlmm 88 GPIO_ACTIVE_HIGH>; /* card detect gpio */
This comment is still pretty much spam.

> +	vmmc-supply = <&vreg_l22a_2p96>;
> +	vqmmc-supply = <&vreg_l5a_2p96>;
> +	no-sdio;
> +
> +	status = "okay";
> +};
> +
> +&sleep_clk {
> +	clock-frequency = <32000>;
> +};
> +
> +&tlmm {
> +	gpio-reserved-ranges = <37 5>, <43 2>, <47 1>,
> +			       <49 1>, <52 1>, <54 1>,
> +			       <56 3>, <61 2>, <64 1>,
> +			       <68 1>, <72 8>, <96 1>;
> +};
> +
> +&uart4 {
> +	status = "okay";
> +};
This is not the correct SE for the production board. People
booting this will get a tz bite.

LGTM otherwise.

Konrad
> +
> +&xo_board {
> +	clock-frequency = <19200000>;
> +};