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Date: Wed, 24 Mar 2021 20:53:55 +0530
From: sbhanu@...eaurora.org
To: Stephen Boyd <swboyd@...omium.org>
Cc: adrian.hunter@...el.com, robh+dt@...nel.org,
ulf.hansson@...aro.org, asutoshd@...eaurora.org,
stummala@...eaurora.org, vbadigan@...eaurora.org,
rampraka@...eaurora.org, sayalil@...eaurora.org,
sartgarg@...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
Subject: Re: [PATCH V2] arm64: dts: qcom: sc7280: Add nodes for eMMC and SD
card
On 2021-03-23 12:31, Stephen Boyd wrote:
> Quoting Shaik Sajida Bhanu (2021-03-20 11:17:00)
>> diff --git a/arch/arm64/boot/dts/qcom/sc7280-idp.dts
>> b/arch/arm64/boot/dts/qcom/sc7280-idp.dts
>> index 54d2cb3..4105263 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>
>
> Please include this before sc7280.dtsi
>
Sure
>>
>> / {
>> model = "Qualcomm Technologies, Inc. sc7280 IDP platform";
>> @@ -242,6 +243,30 @@
>> status = "okay";
>> };
>>
>> +&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";
>
> Please add a space after the comma ^
Sure
>
>> + 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>;
>> +};
>> +
>> /* PINCTRL - additions to nodes defined in sc7280.dtsi */
>>
>> &qup_uart5_default {
>> diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi
>> b/arch/arm64/boot/dts/qcom/sc7280.dtsi
>> index 8f6b569..69eb064 100644
>> --- a/arch/arm64/boot/dts/qcom/sc7280.dtsi
>> +++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi
>> @@ -20,6 +20,11 @@
>>
>> chosen { };
>>
>> + aliases {
>> + mmc1 = &sdhc_1;
>> + mmc2 = &sdhc_2;
>> + };
>> +
>> clocks {
>> xo_board: xo-board {
>> compatible = "fixed-clock";
>> @@ -305,6 +310,64 @@
>> #power-domain-cells = <1>;
>> };
>>
>> + sdhc_1: sdhci@...000 {
>> + compatible = "qcom,sdhci-msm-v5";
>> + reg = <0 0x7c4000 0 0x1000>,
>
> Please add leading zeroes to the physical address, i.e. 0x007c4000
Sure
>
>> + <0 0x7c5000 0 0x1000>;
>> + reg-names = "hc", "cqhci";
>> +
>> + iommus = <&apps_smmu 0xC0 0x0>;
>
> Lowercase hex please.
Sure
>
>> + 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";
>> + interconnects = <&aggre1_noc MASTER_SDCC_1 0
>> &mc_virt SLAVE_EBI1 0>,
>> + <&gem_noc MASTER_APPSS_PROC 0
>> &cnoc2 SLAVE_SDCC_1 0>;
>> + interconnect-names = "sdhc-ddr","cpu-sdhc";
>> + power-domains = <&rpmhpd SC7280_CX>;
>> + operating-points-v2 = <&sdhc1_opp_table>;
>> +
>> + bus-width = <8>;
>> + non-removable;
>> + supports-cqe;
>> + no-sd;
>> + no-sdio;
>> +
>> + max-frequency = <192000000>;
>
> Is this necessary?
yes, to avoid lower speed modes running with high clock rates.
>
>> +
>> + 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";
>
> Can this be near the compatible string?
Sure
>
>> +
>> + sdhc1_opp_table: sdhc1-opp-table {
>> + compatible = "operating-points-v2";
>> +
>> + opp-100000000 {
>> + opp-hz = /bits/ 64
>> <100000000>;
>> + required-opps =
>> <&rpmhpd_opp_low_svs>;
>> + opp-peak-kBps = <1200000
>> 76000>;
>> + opp-avg-kBps = <1200000
>> 50000>;
>> + };
>> +
>> + opp-384000000 {
>> + opp-hz = /bits/ 64
>> <384000000>;
>> + required-opps =
>> <&rpmhpd_opp_nom>;
>> + opp-peak-kBps = <5400000
>> 1600000>;
>> + opp-avg-kBps = <6000000
>> 300000>;
>> + };
>> + };
>> + };
>> +
>> qupv3_id_0: geniqup@...000 {
>> compatible = "qcom,geni-se-qup";
>> reg = <0 0x009c0000 0 0x2000>;
>> @@ -328,6 +391,54 @@
>> };
>> };
>>
>> + sdhc_2: sdhci@...4000 {
>> + compatible = "qcom,sdhci-msm-v5";
>> + reg = <0 0x08804000 0 0x1000>;
>
> This has leading zeroes, great!
>
>> +
>> + 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>;
>
> Is this aligned properly?
yes
>
>> + clock-names = "core", "iface", "xo";
>> + interconnects = <&aggre1_noc MASTER_SDCC_2 0
>> &mc_virt SLAVE_EBI1 0>,
>> + <&gem_noc MASTER_APPSS_PROC 0
>> &cnoc2 SLAVE_SDCC_2 0>;
>> + interconnect-names = "sdhc-ddr","cpu-sdhc";
>> + power-domains = <&rpmhpd SC7280_CX>;
>> + operating-points-v2 = <&sdhc2_opp_table>;
>> +
>> + bus-width = <4>;
>> +
>> + no-mmc;
>> + no-sdio;
>> +
>> + max-frequency = <202000000>;
>
> Is this necessary?
yes, to avoid clock running more than required clock rate.
>
>> +
>> + qcom,dll-config = <0x0007642c>;
>> +
>> + status = "disabled";
>
> Move up near compatible?
sure
>
>> +
>> + sdhc2_opp_table: sdhc2-opp-table {
>> + compatible =
>> "operating-points-v2";
>> +
>> + opp-100000000 {
>> + opp-hz =/bits/ 64
>> <100000000>;
>> + required-opps =
>> <&rpmhpd_opp_low_svs>;
>> + opp-peak-kBps =
>> <1200000 76000>;
>> + opp-avg-kBps =
>> <1200000 50000>;
>> + };
>> + opp-202000000 {
>> + opp-hz = /bits/ 64
>> <202000000>;
>> + required-opps =
>> <&rpmhpd_opp_nom>;
>> + opp-peak-kBps =
>> <3500000 1200000>;
>> + opp-avg-kBps =
>> <5000000 100000>;
>> + };
>> + };
>> + };
>> +
>> pdc: interrupt-controller@...0000 {
>> compatible = "qcom,sc7280-pdc", "qcom,pdc";
>> reg = <0 0x0b220000 0 0x30000>;
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