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Date: Wed, 10 Mar 2021 18:44:55 +0530
From: sbhanu@...eaurora.org
To: Veerabhadrarao Badiganti <vbadigan@...eaurora.org>
Cc: adrian.hunter@...el.com, ulf.hansson@...aro.org,
robh+dt@...nel.org, sartgarg@...eaurora.org,
asutoshd@...eaurora.org, stummala@...eaurora.org,
rampraka@...eaurora.org, sayalil@...eaurora.org,
rnayak@...eaurora.org, saiprakash.ranjan@...eaurora.org,
sibis@...eaurora.org, cang@...eaurora.org, pragalla@...eaurora.org,
nitirawa@...eaurora.org, linux-mmc@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
devicetree@...r.kernel.org, agross@...nel.org,
bjorn.andersson@...aro.org, vbadigan=codeaurora.org@...eaurora.org
Subject: Re: [PATCH V1] arm64: dts: qcom: sc7280: Add nodes for eMMC and SD
card
On 2021-03-10 10:18, Veerabhadrarao Badiganti wrote:
> On 3/10/2021 12:48 AM, Shaik Sajida Bhanu wrote:
>> Add nodes for eMMC and SD card on sc7280.
>>
>> Signed-off-by: Shaik Sajida Bhanu <sbhanu@...eaurora.org>
>>
>> ---
>> This change is depends on the below patch series:
>> https://lore.kernel.org/lkml/1613114930-1661-1-git-send-email-rnayak@codeaurora.org/
>> https://lore.kernel.org/patchwork/project/lkml/list/?series=&submitter=28035&state=&q=&archive=&delegate=
>> ---
>> arch/arm64/boot/dts/qcom/sc7280-idp.dts | 26 +++++
>> arch/arm64/boot/dts/qcom/sc7280.dtsi | 170
>> ++++++++++++++++++++++++++++++++
>> 2 files changed, 196 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/qcom/sc7280-idp.dts
>> b/arch/arm64/boot/dts/qcom/sc7280-idp.dts
>> index ac79420..6abb2aa 100644
>> --- a/arch/arm64/boot/dts/qcom/sc7280-idp.dts
>> +++ b/arch/arm64/boot/dts/qcom/sc7280-idp.dts
>> @@ -8,6 +8,7 @@
>> /dts-v1/;
>> #include "sc7280.dtsi"
>> +#include <dt-bindings/gpio/gpio.h>
>> / {
>> model = "Qualcomm Technologies, Inc. SC7280 IDP platform";
>> @@ -256,3 +257,28 @@
>> bias-pull-up;
>> };
>> };
>> +
>> +&sdhc_1 {
>> + status = "okay";
>> +
>> + pinctrl-names = "default", "sleep";
>> + pinctrl-0 = <&sdc1_on>;
>> + pinctrl-1 = <&sdc1_off>;
>> +
>> + vmmc-supply = <&vreg_l7b_2p9>;
>> + vqmmc-supply = <&vreg_l19b_1p8>;
>> +
>> +};
>> +
>> +&sdhc_2 {
>> + status = "okay";
>> +
>> + 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 91 GPIO_ACTIVE_LOW>;
>> +};
>> diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi
>> b/arch/arm64/boot/dts/qcom/sc7280.dtsi
>> index 3b86052..91fb18a 100644
>> --- a/arch/arm64/boot/dts/qcom/sc7280.dtsi
>> +++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi
>> @@ -18,6 +18,11 @@
>> chosen { };
>> + aliases {
>> + mmc1 = &sdhc_1;
>> + mmc2 = &sdhc_2;
>> + };
>> +
>> clocks {
>> xo_board: xo-board {
>> compatible = "fixed-clock";
>> @@ -315,6 +320,69 @@
>> #power-domain-cells = <1>;
>> };
>> + sdhc_1: sdhci@...000 {
>> + compatible = "qcom,sdhci-msm-v5";
>> + reg = <0 0x7c4000 0 0x1000>,
>> + <0 0x7c5000 0 0x1000>;
>> + reg-names = "hc", "cqhci";
>> +
>> + iommus = <&apps_smmu 0xC0 0x0>;
>> + interrupts = <GIC_SPI 652 IRQ_TYPE_LEVEL_HIGH>,
>> + <GIC_SPI 656 IRQ_TYPE_LEVEL_HIGH>;
>> + interrupt-names = "hc_irq", "pwr_irq";
>> +
>> + clocks = <&gcc GCC_SDCC1_APPS_CLK>,
>> + <&gcc GCC_SDCC1_AHB_CLK>,
>> + <&rpmhcc RPMH_CXO_CLK>;
>> + clock-names = "core", "iface", "xo";
>> +
>> + bus-width = <8>;
>> + non-removable;
>> + supports-cqe;
>> + no-sd;
>> + no-sdio;
>> +
>> + max-frequency = <192000000>;
>> +
>> + qcom,dll-config = <0x0007642c>;
>> + qcom,ddr-config = <0x80040868>;
>> +
>> + mmc-ddr-1_8v;
>> + mmc-hs200-1_8v;
>> + mmc-hs400-1_8v;
>> + mmc-hs400-enhanced-strobe;
>> +
>> + status = "disabled";
>> +
>> + };
>> +
>> + sdhc_2: sdhci@...4000 {
>> + compatible = "qcom,sdhci-msm-v5";
>> + reg = <0 0x08804000 0 0x1000>;
>> +
>> + iommus = <&apps_smmu 0x100 0x0>;
>> + interrupts = <GIC_SPI 207 IRQ_TYPE_LEVEL_HIGH>,
>> + <GIC_SPI 223 IRQ_TYPE_LEVEL_HIGH>;
>> + interrupt-names = "hc_irq", "pwr_irq";
>> +
>> + clocks = <&gcc GCC_SDCC2_APPS_CLK>,
>> + <&gcc GCC_SDCC2_AHB_CLK>,
>> + <&rpmhcc RPMH_CXO_CLK>;
>> + clock-names = "core", "iface", "xo";
>> +
>> + bus-width = <4>;
>> +
>> + no-mmc;
>> + no-sdio;
>> +
>> + max-frequency = <202000000>;
>> +
>> + qcom,dll-config = <0x0007642c>;
>> +
>> + status = "disabled";
>> +
>> + };
>> +
>> qupv3_id_0: geniqup@...000 {
>> compatible = "qcom,geni-se-qup";
>> reg = <0 0x009c0000 0 0x2000>;
>> @@ -385,6 +453,108 @@
>> pins = "gpio46", "gpio47";
>> function = "qup13";
>> };
>> +
>> + sdc1_on: sdc1-on {
>> + pinconf-clk {
>> + pins = "sdc1_clk";
>> + bias-disable;
>> + drive-strength = <16>;
>> + };
>> +
>> + pinconf-cmd {
>> + pins = "sdc1_cmd";
>> + bias-pull-up;
>> + drive-strength = <10>;
>> + };
>> +
>> + pinconf-data {
>> + pins = "sdc1_data";
>> + bias-pull-up;
>> + drive-strength = <10>;
>> + };
>> +
>> + pinconf-rclk {
>> + pins = "sdc1_rclk";
>> + bias-pull-down;
>> + };
>> + };
>> +
>> + sdc1_off: sdc1-off {
>> + pinconf-clk {
>> + pins = "sdc1_clk";
>> + bias-disable;
>> + drive-strength = <2>;
>> + };
>> +
>> + pinconf-cmd {
>> + pins = "sdc1_cmd";
>> + bias-pull-up;
>> + drive-strength = <2>;
>> + };
>> +
>> + pinconf-data {
>> + pins = "sdc1_data";
>> + bias-pull-up;
>> + drive-strength = <2>;
>> + };
>> +
>> + pinconf-rclk {
>> + pins = "sdc1_rclk";
>> + bias-pull-down;
>> + };
>> + };
>> +
>> + sdc2_on: sdc2-on {
>> + pinconf-clk {
>> + pins = "sdc2_clk";
>> + bias-disable;
>> + drive-strength = <16>;
>> + };
>> +
>> + pinconf-cmd {
>> + pins = "sdc2_cmd";
>> + bias-pull-up;
>> + drive-strength = <10>;
>> + };
>> +
>> + pinconf-data {
>> + pins = "sdc2_data";
>> + bias-pull-up;
>> + drive-strength = <10>;
>> + };
>> +
>> + pinconf-sd-cd {
>> + pins = "gpio91";
>> + bias-pull-up;
>> + drive-strength = <2>;
>> + };
>> + };
>> +
>> + sdc2_off: sdc2-off {
>> + pinconf-clk {
>> + pins = "sdc2_clk";
>> + bias-disable;
>> + drive-strength = <2>;
>> + };
>> +
>> + pinconf-cmd {
>> + pins = "sdc2_cmd";
>> + bias-pull-up;
>> + drive-strength = <2>;
>> + };
>> +
>> + pinconf-data {
>> + pins = "sdc2_data";
>> + bias-pull-up;
>> + drive-strength = <2>;
>> + };
>> +
>> + pinconf-sd-cd {
>> + pins = "gpio91";
>> + bias-disable;
> On few sc7180 based boards where external pull up is missing on
> cd-gpio,
> we had seen issues like un-intended interrupt on cd-gpio pin (since its
> getting toggled) during runtime PM cycle and resulting in unnecessary
> scheduling of SDcard scan (mmc_rescan). This issue is seen only when
> SDcard
> is not present.
> By enabling internal pull all the time (bais-pull-up), we can avoid
> such issue.
>
sure
>> + drive-strength = <2>;
>> + };
>> + };
>> };
>> apps_smmu: iommu@...00000 {
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