linux-kernel - [PATCH V7 2/7] arm64: dts: sc7280: Configure SPI-NOR FLASH for sc7280-idp

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Date:   Fri,  3 Sep 2021 09:58:55 +0530
From:   Rajesh Patil <rajpat@...eaurora.org>
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>
Cc:     linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, rnayak@...eaurora.org,
        saiprakash.ranjan@...eaurora.org, msavaliy@....qualcomm.com,
        skakit@...eaurora.org, sboyd@...nel.org, mka@...omium.org,
        dianders@...omium.org, Rajesh Patil <rajpat@...eaurora.org>
Subject: [PATCH V7 2/7] arm64: dts: sc7280: Configure SPI-NOR FLASH for sc7280-idp

Add spi-nor flash node and pinctrl configurations for the SC7280 IDP.

Signed-off-by: Rajesh Patil <rajpat@...eaurora.org>
Reviewed-by: Matthias Kaehlcke <mka@...omium.org>
Reviewed-by: Stephen Boyd <swboyd@...omium.org>
---
 arch/arm64/boot/dts/qcom/sc7280-idp.dtsi | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sc7280-idp.dtsi b/arch/arm64/boot/dts/qcom/sc7280-idp.dtsi
index 371a2a9..c41c2d0 100644
--- a/arch/arm64/boot/dts/qcom/sc7280-idp.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7280-idp.dtsi
@@ -207,6 +207,20 @@
 	};
 };
 
+&qspi {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&qspi_clk>, <&qspi_cs0>, <&qspi_data01>;
+
+	flash@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <37500000>;
+		spi-tx-bus-width = <2>;
+		spi-rx-bus-width = <2>;
+	};
+};
+
 &qupv3_id_0 {
 	status = "okay";
 };
@@ -284,6 +298,19 @@
 
 /* PINCTRL - additions to nodes defined in sc7280.dtsi */
 
+&qspi_cs0 {
+	bias-disable;
+};
+
+&qspi_clk {
+	bias-disable;
+};
+
+&qspi_data01 {
+	/* High-Z when no transfers; nice to park the lines */
+	bias-pull-up;
+};
+
 &qup_uart5_default {
 	tx {
 		pins = "gpio46";
-- 
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