Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.33 as permitted sender) client-ip=23.128.96.33;
From:   Md Sadre Alam <quic_mdalam@quicinc.com>
To:     agross@kernel.org, andersson@kernel.org, konrad.dybcio@linaro.org,
        robh+dt@kernel.org, conor+dt@kernel.org,
        krzysztof.kozlowski+dt@linaro.org, miquel.raynal@bootlin.com,
        richard@nod.at, vigneshr@ti.com, broonie@kernel.org,
        linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org,
        linux-spi@vger.kernel.org, quic_srichara@quicinc.com,
        qpic_varada@quicinc.com
Cc:     quic_mdalam@quicinc.com
Subject: [RFC PATCH 5/5] arm64: dts: qcom: ipq9574: Add support for SPI nand
Date:   Tue, 31 Oct 2023 17:33:07 +0530
Message-Id: <20231031120307.1600689-6-quic_mdalam@quicinc.com>
In-Reply-To: <20231031120307.1600689-1-quic_mdalam@quicinc.com>
References: <20231031120307.1600689-1-quic_mdalam@quicinc.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

Add support for QPIC SPI NAND for IPQ9574

Signed-off-by: Md Sadre Alam <quic_mdalam@quicinc.com>
Signed-off-by: Sricharan R <quic_srichara@quicinc.com>
---
 arch/arm64/boot/dts/qcom/ipq9574-rdp433.dts | 56 ++++++++++-----------
 arch/arm64/boot/dts/qcom/ipq9574.dtsi       | 30 ++++++++++-
 2 files changed, 57 insertions(+), 29 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/ipq9574-rdp433.dts b/arch/arm64/boot/dts/qcom/ipq9574-rdp433.dts
index 1bb8d96c9a82..5e4200edb873 100644
--- a/arch/arm64/boot/dts/qcom/ipq9574-rdp433.dts
+++ b/arch/arm64/boot/dts/qcom/ipq9574-rdp433.dts
@@ -15,48 +15,48 @@ / {
 	compatible = "qcom,ipq9574-ap-al02-c7", "qcom,ipq9574";
 };
 
-&sdhc_1 {
-	pinctrl-0 = <&sdc_default_state>;
-	pinctrl-names = "default";
-	mmc-ddr-1_8v;
-	mmc-hs200-1_8v;
-	mmc-hs400-1_8v;
-	mmc-hs400-enhanced-strobe;
-	max-frequency = <384000000>;
-	bus-width = <8>;
-	status = "okay";
-};
-
 &tlmm {
-	sdc_default_state: sdc-default-state {
-		clk-pins {
+	qspi_nand_pins: qspi_nand_pins {
+		spi_clock {
 			pins = "gpio5";
-			function = "sdc_clk";
+			function = "qspi_clk";
 			drive-strength = <8>;
 			bias-disable;
 		};
 
-		cmd-pins {
+		qspi_cs {
 			pins = "gpio4";
-			function = "sdc_cmd";
+			function = "qspi_cs";
 			drive-strength = <8>;
 			bias-pull-up;
 		};
 
-		data-pins {
-			pins = "gpio0", "gpio1", "gpio2",
-			       "gpio3", "gpio6", "gpio7",
-			       "gpio8", "gpio9";
-			function = "sdc_data";
+		qspi_data {
+			pins = "gpio0", "gpio1", "gpio2";
+			function = "qspi_data";
 			drive-strength = <8>;
 			bias-pull-up;
 		};
 
-		rclk-pins {
-			pins = "gpio10";
-			function = "sdc_rclk";
-			drive-strength = <8>;
-			bias-pull-down;
-		};
+	};
+};
+
+&qpic_bam {
+	status = "okay";
+};
+
+&qpic_nand {
+	status = "okay";
+	pinctrl-0 = <&qspi_nand_pins>;
+	pinctrl-names = "default";
+	spi_nand: spi_nand@0 {
+		compatible = "spi-nand";
+		nand-ecc-engine = <&qpic_nand>;
+		reg = <0>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+		nand-ecc-strength = <4>;
+		nand-ecc-step-size = <512>;
+		spi-max-frequency = <8000000>;
 	};
 };
diff --git a/arch/arm64/boot/dts/qcom/ipq9574.dtsi b/arch/arm64/boot/dts/qcom/ipq9574.dtsi
index b44acb1fac74..f9c21373f5e6 100644
--- a/arch/arm64/boot/dts/qcom/ipq9574.dtsi
+++ b/arch/arm64/boot/dts/qcom/ipq9574.dtsi
@@ -336,10 +336,38 @@ sdhc_1: mmc@7804000 {
 			status = "disabled";
 		};
 
+		qpic_bam: dma@7984000 {
+			compatible = "qcom,bam-v1.7.0";
+			reg = <0x7984000 0x1c000>;
+			interrupts = <GIC_SPI 146 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&gcc GCC_QPIC_AHB_CLK>;
+			clock-names = "bam_clk";
+			#dma-cells = <1>;
+			qcom,ee = <0>;
+			status = "disabled";
+		};
+
+		qpic_nand: spi@79b0000 {
+			compatible = "qcom,ipq9574-nand";
+			reg = <0x79b0000 0x10000>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			clocks = <&gcc GCC_QPIC_CLK>,
+			<&gcc GCC_QPIC_AHB_CLK>,
+			<&gcc GCC_QPIC_IO_MACRO_CLK>;
+			clock-names = "core", "aon", "io_macro";
+			dmas = <&qpic_bam 0>,
+				<&qpic_bam 1>,
+				<&qpic_bam 2>;
+			dma-names = "tx", "rx", "cmd";
+			nand-ecc-engine = <&bch>;
+			status = "disabled";
+		};
+
 		bch: qpic_ecc {
 			compatible = "qcom,ipq9574-ecc";
 			status = "ok";
-		}
+		};
 
 		blsp_dma: dma-controller@7884000 {
 			compatible = "qcom,bam-v1.7.0";
-- 
2.34.1