Re: [PATCH V2] arm64: dts: qcom: sc7280: Add nodes for eMMC and SD card

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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@7c4000 {
+                       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@9c0000 {
                        compatible = "qcom,geni-se-qup";
                        reg = <0 0x009c0000 0 0x2000>;
@@ -328,6 +391,54 @@
                        };
                };

+               sdhc_2: sdhci@8804000 {
+                       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@b220000 {
                        compatible = "qcom,sc7280-pdc", "qcom,pdc";
                        reg = <0 0x0b220000 0 0x30000>;



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