arm64: dts: qcom: sdm630: Add SDHCI2 node

This will enable usage of (generally) uSD cards.
While at it, add accompanying OPP table for DVFS.
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org>
Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Link: https://lore.kernel.org/r/20210728222542.54269-10-konrad.dybcio@somainline.org
[bjorn: Dropped "sdhci1-" prefix from opp-table node]
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

arch/arm64/boot/dts/qcom/sdm630.dtsi

@@ -1036,6 +1036,56 @@ qusb2phy: phy@c012000 {
 			status = "disabled";
 		};
 
+		sdhc_2: sdhci@c084000 {
+			compatible = "qcom,sdm630-sdhci", "qcom,sdhci-msm-v5";
+			reg = <0x0c084000 0x1000>;
+			reg-names = "hc";
+
+			interrupts = <GIC_SPI 125 IRQ_TYPE_LEVEL_HIGH>,
+					<GIC_SPI 221 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "hc_irq", "pwr_irq";
+
+			bus-width = <4>;
+			clocks = <&gcc GCC_SDCC2_APPS_CLK>,
+					<&gcc GCC_SDCC2_AHB_CLK>,
+					<&xo_board>;
+			clock-names = "core", "iface", "xo";
+
+			interconnects = <&a2noc 3 &a2noc 10>,
+					<&gnoc 0 &cnoc 28>;
+			operating-points-v2 = <&sdhc2_opp_table>;
+
+			pinctrl-names = "default", "sleep";
+			pinctrl-0 = <&sdc2_state_on>;
+			pinctrl-1 = <&sdc2_state_off>;
+			power-domains = <&rpmpd SDM660_VDDCX>;
+
+			status = "disabled";
+
+			sdhc2_opp_table: opp-table {
+				 compatible = "operating-points-v2";
+
+				 opp-50000000 {
+					opp-hz = /bits/ 64 <50000000>;
+					required-opps = <&rpmpd_opp_low_svs>;
+					opp-peak-kBps = <200000 140000>;
+					opp-avg-kBps = <130718 133320>;
+				 };
+				 opp-100000000 {
+					opp-hz = /bits/ 64 <100000000>;
+					required-opps = <&rpmpd_opp_svs>;
+					opp-peak-kBps = <250000 160000>;
+					opp-avg-kBps = <196078 150000>;
+				 };
+				 opp-200000000 {
+					opp-hz = /bits/ 64 <200000000>;
+					required-opps = <&rpmpd_opp_nom>;
+					opp-peak-kBps = <4096000 4096000>;
+					opp-avg-kBps = <1338562 1338562>;
+				 };
+			};
+		};
+
 		sdhc_1: sdhci@c0c4000 {
 			compatible = "qcom,sdm630-sdhci", "qcom,sdhci-msm-v5";
 			reg = <0x0c0c4000 0x1000>,