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From: Md Sadre Alam <quic_mdalam@quicinc.com>
To: andersson@kernel.org, konrad.dybcio@linaro.org, broonie@kernel.org,
        robh@kernel.org, krzysztof.kozlowski+dt@linaro.org,
        conor+dt@kernel.org, miquel.raynal@bootlin.com, richard@nod.at,
        vigneshr@ti.com, manivannan.sadhasivam@linaro.org,
        neil.armstrong@linaro.org, daniel@makrotopia.org, arnd@arndb.de,
        chris.packham@alliedtelesis.co.nz, christophe.kerello@foss.st.com,
        linux-arm-msm@vger.kernel.org, linux-spi@vger.kernel.org,
        devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-mtd@lists.infradead.org
Cc: quic_srichara@quicinc.com, quic_varada@quicinc.com,
        quic_mdalam@quicinc.com
Subject: [PATCH v4 4/5] arm64: dts: qcom: ipq9574: Add SPI nand support
Date: Fri,  8 Mar 2024 14:47:51 +0530
Message-Id: <20240308091752.16136-5-quic_mdalam@quicinc.com>
In-Reply-To: <20240308091752.16136-1-quic_mdalam@quicinc.com>
References: <20240308091752.16136-1-quic_mdalam@quicinc.com>
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Add SPI NAND support for ipq9574 SoC.

Signed-off-by: Md Sadre Alam <quic_mdalam@quicinc.com>
---
Change in [v4]

* No change

Change in [v3]

* Updated gpio number as per pin control driver

* Fixed alignment issue

Change in [v2]

* Added initial enablement for spi-nand 

Change in [v1]

* Posted as RFC patch for design review


 .../boot/dts/qcom/ipq9574-rdp-common.dtsi     | 43 +++++++++++++++++++
 arch/arm64/boot/dts/qcom/ipq9574.dtsi         | 27 ++++++++++++
 2 files changed, 70 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/ipq9574-rdp-common.dtsi b/arch/arm64/boot/dts/qcom/ipq9574-rdp-common.dtsi
index 91e104b0f865..6429a6b3b903 100644
--- a/arch/arm64/boot/dts/qcom/ipq9574-rdp-common.dtsi
+++ b/arch/arm64/boot/dts/qcom/ipq9574-rdp-common.dtsi
@@ -139,6 +139,49 @@ gpio_leds_default: gpio-leds-default-state {
 		drive-strength = <8>;
 		bias-pull-up;
 	};
+
+	qpic_snand_default_state: qpic-snand-default-state {
+		clock-pins {
+			pins = "gpio5";
+			function = "qspi_clk";
+			drive-strength = <8>;
+			bias-disable;
+		};
+
+		cs-pins {
+			pins = "gpio4";
+			function = "qspi_cs";
+			drive-strength = <8>;
+			bias-disable;
+		};
+
+		data-pins {
+			pins = "gpio0", "gpio1", "gpio2", "gpio3";
+			function = "qspi_data";
+			drive-strength = <8>;
+			bias-disable;
+		};
+	};
+};
+
+&qpic_bam {
+	status = "okay";
+};
+
+&qpic_nand {
+	pinctrl-0 = <&qpic_snand_default_state>;
+	pinctrl-names = "default";
+	status = "okay";
+
+	flash@0 {
+		compatible = "spi-nand";
+		reg = <0>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+		nand-ecc-engine = <&qpic_nand>;
+		nand-ecc-strength = <4>;
+		nand-ecc-step-size = <512>;
+	};
 };
 
 &usb_0_dwc3 {
diff --git a/arch/arm64/boot/dts/qcom/ipq9574.dtsi b/arch/arm64/boot/dts/qcom/ipq9574.dtsi
index 7f2e5cbf3bbb..786bb3540d6c 100644
--- a/arch/arm64/boot/dts/qcom/ipq9574.dtsi
+++ b/arch/arm64/boot/dts/qcom/ipq9574.dtsi
@@ -319,6 +319,33 @@ tcsr: syscon@1937000 {
 			reg = <0x01937000 0x21000>;
 		};
 
+		qpic_bam: dma-controller@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,spi-qpic-snand";
+			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", "iom";
+			dmas = <&qpic_bam 0>,
+			       <&qpic_bam 1>,
+			       <&qpic_bam 2>;
+			dma-names = "tx", "rx", "cmd";
+			status = "disabled";
+		};
+
 		sdhc_1: mmc@7804000 {
 			compatible = "qcom,ipq9574-sdhci", "qcom,sdhci-msm-v5";
 			reg = <0x07804000 0x1000>,
-- 
2.34.1