linux-kernel - Re: [PATCH v2 1/1] arm64: dts: rockchip: add core dtsi file for RK3399Pro SoCs

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Date:   Wed, 29 May 2019 10:06:50 +0200
From:   Heiko Stübner <heiko@...ech.de>
To:     Jianqun Xu <jay.xu@...k-chips.com>
Cc:     mark.rutland@....com, robh+dt@...nel.org, zhangzj@...k-chips.com,
        manivannan.sadhasivam@...aro.org,
        linux-rockchip@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org
Subject: Re: [PATCH v2 1/1] arm64: dts: rockchip: add core dtsi file for RK3399Pro SoCs

Hi Jay,

Am Mittwoch, 29. Mai 2019, 09:47:52 CEST schrieb Jianqun Xu:
> This patch adds core dtsi file for Rockchip RK3399Pro SoCs,
> include rk3399.dtsi. Also enable these nodes:
> - pcie/pcie_phy
> - sdhci/sdio/emmc/sdmmc
> 
> Signed-off-by: Jianqun Xu <jay.xu@...k-chips.com>
> ---
> changes since v1:
> - remove dfi and dmc
> 
>  arch/arm64/boot/dts/rockchip/rk3399pro.dtsi | 74 +++++++++++++++++++++
>  1 file changed, 74 insertions(+)
>  create mode 100644 arch/arm64/boot/dts/rockchip/rk3399pro.dtsi
> 
> diff --git a/arch/arm64/boot/dts/rockchip/rk3399pro.dtsi b/arch/arm64/boot/dts/rockchip/rk3399pro.dtsi
> new file mode 100644
> index 000000000000..b6d433ffa67d
> --- /dev/null
> +++ b/arch/arm64/boot/dts/rockchip/rk3399pro.dtsi
> @@ -0,0 +1,74 @@
> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> +// Copyright (c) 2019 Fuzhou Rockchip Electronics Co., Ltd.
> +
> +#include "rk3399.dtsi"
> +
> +/ {
> +	compatible = "rockchip,rk3399pro";
> +
> +	xin32k: xin32k {
> +		compatible = "fixed-clock";
> +		clock-frequency = <32768>;
> +		clock-output-names = "xin32k";
> +		#clock-cells = <0>;
> +	};

Just to clarify, is the x32k clock really part of the soc itself?
Like on older SoCs it was always supplied from the pmic
or a separate rtc chip.


> +};
> +
> +&emmc_phy {
> +	status = "okay";
> +};

Is the emmc used inside the soc? As otherwise emmc / mmc controller
settings would be more a part of the actual board using the soc.


> +&pcie_phy {
> +	status = "okay";
> +};
> +
> +&pcie0 {
> +	ep-gpios = <&gpio0 RK_PB4 GPIO_ACTIVE_HIGH>;
> +	num-lanes = <4>;
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&pcie_clkreqn_cpm>;
> +	status = "okay";
> +};

This is probably needed as it needs to talk the rk1808
part over pcie, so it's really internal to the soc.


> +
> +&sdhci {
> +	bus-width = <8>;
> +	mmc-hs400-1_8v;
> +	supports-emmc;
> +	non-removable;
> +	keep-power-in-suspend;
> +	mmc-hs400-enhanced-strobe;
> +	status = "okay";
> +};

Same comment as for emmc_phy above

> +&sdio0 {
> +	clock-frequency = <150000000>;
> +	clock-freq-min-max = <200000 150000000>;
> +	supports-sdio;
> +	bus-width = <4>;
> +	disable-wp;
> +	cap-sd-highspeed;
> +	cap-sdio-irq;
> +	keep-power-in-suspend;
> +	mmc-pwrseq = <&sdio_pwrseq>;
> +	non-removable;
> +	num-slots = <1>;
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&sdio0_bus4 &sdio0_cmd &sdio0_clk>;
> +	sd-uhs-sdr104;
> +	status = "okay";
> +};

Same comment as for emmc_phy above

> +&sdmmc {
> +	clock-frequency = <150000000>;
> +	clock-freq-min-max = <400000 150000000>;
> +	supports-sd;
> +	bus-width = <4>;
> +	cap-mmc-highspeed;
> +	cap-sd-highspeed;
> +	disable-wp;
> +	num-slots = <1>;
> +	vqmmc-supply = <&vccio_sd>;
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&sdmmc_clk &sdmmc_cmd &sdmmc_cd &sdmmc_bus4>;
> +	status = "okay";
> +};

Same comment as for emmc_phy above