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Date: Tue, 17 Dec 2019 14:21:19 -0800
From: Matthias Kaehlcke <mka@...omium.org>
To: Veerabhadrarao Badiganti <vbadigan@...eaurora.org>
Cc: adrian.hunter@...el.com, ulf.hansson@...aro.org,
robh+dt@...nel.org, asutoshd@...eaurora.org,
stummala@...eaurora.org, sayalil@...eaurora.org,
cang@...eaurora.org, rampraka@...eaurora.org,
linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
Andy Gross <agross@...nel.org>,
Bjorn Andersson <bjorn.andersson@...aro.org>,
Mark Rutland <mark.rutland@....com>
Subject: Re: [PATCH V2] arm64: dts: qcom: sc7180: Add nodes for eMMC and SD
card
On Sat, Dec 14, 2019 at 07:24:34AM +0530, Veerabhadrarao Badiganti wrote:
> Add sdhc instances for supporting eMMC and SD-card on sc7180.
> The regulators should be in HPM state for proper functionality of
> eMMC and SD-card. Updating corresponding regulators accordingly.
>
> Signed-off-by: Veerabhadrarao Badiganti <vbadigan@...eaurora.org>
The patch doesn't apply against qcom/for-next, looks like you need to
rebase it.
> ---
>
> This depends on the patch series (dt support for sc7180):
> https://lkml.org/lkml/2019/11/8/149
> Also depends on documentation commit 2078158 (Present on mmc-next)
>
> Changes since V1:
> - Updated the regulator min, max voltages as per
> eMMC/SD-card voltage requirements
> - Enabled IOMMU for eMMC and SD-card.
> - Added pull and drive strength to SD-card cd-gpio.
> - Incorporated review comments by Matthias Kaehlcke.
> ---
> arch/arm64/boot/dts/qcom/sc7180-idp.dts | 47 +++++++---
> arch/arm64/boot/dts/qcom/sc7180.dtsi | 148 ++++++++++++++++++++++++++++++++
> 2 files changed, 183 insertions(+), 12 deletions(-)
>
> diff --git a/arch/arm64/boot/dts/qcom/sc7180-idp.dts b/arch/arm64/boot/dts/qcom/sc7180-idp.dts
> index 189254f..b6d4dc1 100644
> --- a/arch/arm64/boot/dts/qcom/sc7180-idp.dts
> +++ b/arch/arm64/boot/dts/qcom/sc7180-idp.dts
> @@ -7,6 +7,7 @@
>
> /dts-v1/;
>
> +#include <dt-bindings/gpio/gpio.h>
> #include <dt-bindings/regulator/qcom,rpmh-regulator.h>
> #include "sc7180.dtsi"
> #include "pm6150.dtsi"
> @@ -101,9 +102,9 @@
> };
>
> vreg_l12a_1p8: ldo12 {
> - regulator-min-microvolt = <1696000>;
> - regulator-max-microvolt = <1952000>;
> - regulator-initial-mode = <RPMH_REGULATOR_MODE_LPM>;
> + regulator-min-microvolt = <1800000>;
> + regulator-max-microvolt = <1800000>;
> + regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
> };
>
> vreg_l13a_1p8: ldo13 {
> @@ -143,9 +144,9 @@
> };
>
> vreg_l19a_2p9: ldo19 {
> - regulator-min-microvolt = <2696000>;
> - regulator-max-microvolt = <3304000>;
> - regulator-initial-mode = <RPMH_REGULATOR_MODE_LPM>;
> + regulator-min-microvolt = <2960000>;
> + regulator-max-microvolt = <2960000>;
> + regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
> };
> };
>
> @@ -189,9 +190,9 @@
> };
>
> vreg_l6c_2p9: ldo6 {
> - regulator-min-microvolt = <2696000>;
> - regulator-max-microvolt = <3304000>;
> - regulator-initial-mode = <RPMH_REGULATOR_MODE_LPM>;
> + regulator-min-microvolt = <1800000>;
> + regulator-max-microvolt = <2950000>;
> + regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
> };
>
> vreg_l7c_3p0: ldo7 {
> @@ -207,9 +208,9 @@
> };
>
> vreg_l9c_2p9: ldo9 {
> - regulator-min-microvolt = <2952000>;
> - regulator-max-microvolt = <3304000>;
> - regulator-initial-mode = <RPMH_REGULATOR_MODE_LPM>;
> + regulator-min-microvolt = <2960000>;
> + regulator-max-microvolt = <2960000>;
> + regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
> };
>
> vreg_l10c_3p3: ldo10 {
> @@ -400,3 +401,25 @@
> bias-pull-up;
> };
> };
> +
> +&sdhc_1 {
> + status = "ok";
> +
> + pinctrl-names = "default", "sleep";
> + pinctrl-0 = <&sdc1_on>;
> + pinctrl-1 = <&sdc1_off>;
> + vmmc-supply = <&vreg_l19a_2p9>;
> + vqmmc-supply = <&vreg_l12a_1p8>;
> +};
> +
> +&sdhc_2 {
> + status = "ok";
> +
> + pinctrl-names = "default","sleep";
> + pinctrl-0 = <&sdc2_on>;
> + pinctrl-1 = <&sdc2_off>;
> + vmmc-supply = <&vreg_l9c_2p9>;
> + vqmmc-supply = <&vreg_l6c_2p9>;
> +
> + cd-gpios = <&tlmm 69 GPIO_ACTIVE_LOW>;
> +};
You are adding these entries to the pinctrl section, they belong
above the "/* PINCTRL - additions to nodes defined in sc7180.dtsi */"
comment.
> diff --git a/arch/arm64/boot/dts/qcom/sc7180.dtsi b/arch/arm64/boot/dts/qcom/sc7180.dtsi
> index 666e9b9..16de9b8 100644
> --- a/arch/arm64/boot/dts/qcom/sc7180.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7180.dtsi
> @@ -182,6 +182,32 @@
> #power-domain-cells = <1>;
> };
>
> + sdhc_1: sdhci@...000 {
> + compatible = "qcom,sc7180-sdhci", "qcom,sdhci-msm-v5";
> + reg = <0 0x7c4000 0 0x1000>;
> + reg-names = "hc_mem";
> +
> + interrupts = <GIC_SPI 641 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 644 IRQ_TYPE_LEVEL_HIGH>;
> + interrupt-names = "hc_irq", "pwr_irq";
> +
> + clocks = <&gcc GCC_SDCC1_APPS_CLK>,
> + <&gcc GCC_SDCC1_AHB_CLK>;
> + clock-names = "core", "iface";
> +
> + iommus = <&apps_smmu 0x60 0x0>;
> +
> + bus-width = <8>;
> + non-removable;
> +
> + mmc-ddr-1_8v;
> + mmc-hs200-1_8v;
> + mmc-hs400-1_8v;
> + mmc-hs400-enhanced-strobe;
> +
> + status = "disabled";
> + };
> +
> qupv3_id_0: geniqup@...000 {
> compatible = "qcom,geni-se-qup";
> reg = <0 0x008c0000 0 0x6000>;
> @@ -897,6 +923,128 @@
> function = "qup15";
> };
> };
> +
> + sdc1_on: sdc1-on {
> + clk {
judging from some other nodes the convention seems to be to call the
nodes 'pinconf-<name>'.
> + pins = "sdc1_clk";
> + bias-disable;
> + drive-strength = <16>;
> + };
> +
> + cmd {
> + pins = "sdc1_cmd";
> + bias-pull-up;
> + drive-strength = <10>;
> + };
> +
> + data {
> + pins = "sdc1_data";
> + bias-pull-up;
> + drive-strength = <10>;
> + };
cmd and data have the same configuration, in theory you could combine
them in a single node. Not sure if it's strictly required, in this case
with just two pins it doesn't make a big difference.
> +
> + rclk {
> + pins = "sdc1_rclk";
> + bias-pull-down;
> + };
> + };
> +
> + sdc1_off: sdc1-off {
> + clk {
> + pins = "sdc1_clk";
> + bias-disable;
> + drive-strength = <2>;
> + };
> +
> + cmd {
> + pins = "sdc1_cmd";
> + bias-pull-up;
> + drive-strength = <2>;
> + };
> +
> + data {
> + pins = "sdc1_data";
> + bias-pull-up;
> + drive-strength = <2>;
> + };
> +
> + rclk {
> + pins = "sdc1_rclk";
> + bias-pull-down;
> + };
> + };
> +
> + sdc2_on: sdc2_on {
nit: sdc2_on: sdc2-on
> + clk {
> + pins = "sdc2_clk";
> + bias-disable;
> + drive-strength = <16>;
> + };
> +
> + cmd {
> + pins = "sdc2_cmd";
> + bias-pull-up;
> + drive-strength = <10>;
> + };
> +
> + data {
> + pins = "sdc2_data";
> + bias-pull-up;
> + drive-strength = <10>;
> + };
> +
> + sd-cd {
> + pins = "gpio69";
> + bias-pull-up;
> + drive-strength = <2>;
> + };
> + };
> +
> + sdc2_off: sdc2_off {
nit: sdc2_off: sdc2-off
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