From ec183195f0fa1374e576ff30d539ca84d4dfe681 Mon Sep 17 00:00:00 2001 From: Clark Wang Date: Mon, 27 Jul 2020 11:15:13 +0800 Subject: [PATCH] dt-bindings: lpspi: New property in document DT bindings for LPSPI Add "fsl,spi-only-use-cs1-sel" to fit i.MX8DXL-EVK. Spi common code does not support use of CS signals discontinuously. It only uses CS1 without using CS0. So, add this property to re-config chipselect value. Signed-off-by: Clark Wang Link: https://lore.kernel.org/r/20200727031513.31774-1-xiaoning.wang@nxp.com Signed-off-by: Mark Brown --- Documentation/devicetree/bindings/spi/spi-fsl-lpspi.yaml | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/Documentation/devicetree/bindings/spi/spi-fsl-lpspi.yaml b/Documentation/devicetree/bindings/spi/spi-fsl-lpspi.yaml index 143b94a1883a6..22882e769e260 100644 --- a/Documentation/devicetree/bindings/spi/spi-fsl-lpspi.yaml +++ b/Documentation/devicetree/bindings/spi/spi-fsl-lpspi.yaml @@ -34,6 +34,12 @@ properties: - const: per - const: ipg + fsl,spi-only-use-cs1-sel: + description: + spi common code does not support use of CS signals discontinuously. + i.MX8DXL-EVK board only uses CS1 without using CS0. Therefore, add + this property to re-config the chipselect value in the LPSPI driver. + required: - compatible - reg @@ -57,4 +63,5 @@ examples: <&clks IMX7ULP_CLK_DUMMY>; clock-names = "per", "ipg"; spi-slave; + fsl,spi-only-use-cs1-sel; }; -- 2.39.5