linux-kernel - [PATCH 1/2] arm64: dts: ti: k3-j784s4-main: Add DT node for UFS

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Date:   Tue, 25 Jul 2023 11:08:42 +0530
From:   Udit Kumar <u-kumar1@...com>
To:     <vigneshr@...com>, <nm@...com>, <kristo@...nel.org>,
        <robh+dt@...nel.org>, <linux-arm-kernel@...ts.infradead.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     Udit Kumar <u-kumar1@...com>, Chai Wenle <Wenle.Chai@...driver.com>
Subject: [PATCH 1/2] arm64: dts: ti: k3-j784s4-main: Add DT node for UFS

This patch adds UFS support present in J784S4 SOC.

UFS is documentend in J784S4 TRM[1]
Section 12.3.7 'Universal Flash Storage (UFS) Interface'

[1] http://www.ti.com/lit/zip/spruj52

Cc: Chai Wenle <Wenle.Chai@...driver.com>
Signed-off-by: Udit Kumar <u-kumar1@...com>
---
 arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi | 24 ++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi b/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi
index 11f163e5cadf..f1db1ca5d6b1 100644
--- a/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi
@@ -1370,6 +1370,30 @@ main_spi7: spi@...0000 {
 		status = "disabled";
 	};
 
+	ufs_wrapper: ufs-wrapper@...0000 {
+		compatible = "ti,j721e-ufs";
+		reg = <0x0 0x4e80000 0x0 0x100>;
+		power-domains = <&k3_pds 387 TI_SCI_PD_EXCLUSIVE>;
+		clocks = <&k3_clks 387 3>;
+		assigned-clocks = <&k3_clks 387 3>;
+		assigned-clock-parents = <&k3_clks 387 6>;
+		ranges;
+		#address-cells = <2>;
+		#size-cells = <2>;
+		status = "disabled";
+
+		ufs@...4000 {
+			compatible = "cdns,ufshc-m31-16nm", "jedec,ufs-2.0";
+			reg = <0x0 0x4e84000 0x0 0x10000>;
+			interrupts = <GIC_SPI 17 IRQ_TYPE_LEVEL_HIGH>;
+			freq-table-hz = <250000000 250000000>, <19200000 19200000>,
+					<19200000 19200000>;
+			clocks = <&k3_clks 387 1>, <&k3_clks 387 3>, <&k3_clks 387 3>;
+			clock-names = "core_clk", "phy_clk", "ref_clk";
+			dma-coherent;
+		};
+	};
+
 	main_r5fss0: r5fss@...0000 {
 		compatible = "ti,j721s2-r5fss";
 		ti,cluster-mode = <1>;
-- 
2.34.1