From: Lars Povlsen <lars.povlsen@microchip.com> To: Mark Brown <broonie@kernel.org>, Peter Rosin <peda@axentia.se>, "Rob Herring" <robh+dt@kernel.org> Cc: Lars Povlsen <lars.povlsen@microchip.com>, Microchip Linux Driver Support <UNGLinuxDriver@microchip.com>, <linux-spi@vger.kernel.org>, <devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>, <linux-arm-kernel@lists.infradead.org>, Serge Semin <fancer.lancer@gmail.com>, Serge Semin <Sergey.Semin@baikalelectronics.ru> Subject: [PATCH v5 4/6] dt-bindings: snps,dw-apb-ssi: Add sparx5 support, plus rx-sample-delay-ns property Date: Mon, 24 Aug 2020 22:30:08 +0200 [thread overview] Message-ID: <20200824203010.2033-5-lars.povlsen@microchip.com> (raw) In-Reply-To: <20200824203010.2033-1-lars.povlsen@microchip.com> This has the following changes for the snps,dw-apb-ss DT bindings: - Add "microchip,sparx5-spi" as the compatible for the Sparx5 SoC controller - Add the property "rx-sample-delay-ns" Signed-off-by: Lars Povlsen <lars.povlsen@microchip.com> --- .../bindings/spi/snps,dw-apb-ssi.yaml | 21 +++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml b/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml index c62cbe79f00d..c79c8a167c46 100644 --- a/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml +++ b/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml @@ -36,6 +36,8 @@ properties: - mscc,ocelot-spi - mscc,jaguar2-spi - const: snps,dw-apb-ssi + - description: Microchip Sparx5 SoC SPI Controller + const: microchip,sparx5-spi - description: Amazon Alpine SPI Controller const: amazon,alpine-dw-apb-ssi - description: Renesas RZ/N1 SPI Controller @@ -93,6 +95,12 @@ properties: - const: tx - const: rx + rx-sample-delay-ns: + default: 0 + description: Default value of the rx-sample-delay-ns property. + This value will be used if the property is not explicitly defined + for a SPI slave device. See below. + patternProperties: "^.*@[0-9a-f]+$": type: object @@ -107,6 +115,13 @@ patternProperties: spi-tx-bus-width: const: 1 + rx-sample-delay-ns: + description: SPI Rx sample delay offset, unit is nanoseconds. + The delay from the default sample time before the actual + sample of the rxd input signal occurs. The "rx_sample_delay" + is an optional feature of the designware controller, and the + upper limit is also subject to controller configuration. + unevaluatedProperties: false required: @@ -129,5 +144,11 @@ examples: num-cs = <2>; cs-gpios = <&gpio0 13 0>, <&gpio0 14 0>; + rx-sample-delay-ns = <3>; + spi-flash@1 { + compatible = "spi-nand"; + reg = <1>; + rx-sample-delay-ns = <7>; + }; }; ... -- 2.27.0
WARNING: multiple messages have this Message-ID (diff)
From: Lars Povlsen <lars.povlsen@microchip.com> To: Mark Brown <broonie@kernel.org>, Peter Rosin <peda@axentia.se>, "Rob Herring" <robh+dt@kernel.org> Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Serge Semin <fancer.lancer@gmail.com>, linux-spi@vger.kernel.org, Serge Semin <Sergey.Semin@baikalelectronics.ru>, Lars Povlsen <lars.povlsen@microchip.com>, Microchip Linux Driver Support <UNGLinuxDriver@microchip.com>, linux-arm-kernel@lists.infradead.org Subject: [PATCH v5 4/6] dt-bindings: snps, dw-apb-ssi: Add sparx5 support, plus rx-sample-delay-ns property Date: Mon, 24 Aug 2020 22:30:08 +0200 [thread overview] Message-ID: <20200824203010.2033-5-lars.povlsen@microchip.com> (raw) In-Reply-To: <20200824203010.2033-1-lars.povlsen@microchip.com> This has the following changes for the snps,dw-apb-ss DT bindings: - Add "microchip,sparx5-spi" as the compatible for the Sparx5 SoC controller - Add the property "rx-sample-delay-ns" Signed-off-by: Lars Povlsen <lars.povlsen@microchip.com> --- .../bindings/spi/snps,dw-apb-ssi.yaml | 21 +++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml b/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml index c62cbe79f00d..c79c8a167c46 100644 --- a/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml +++ b/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml @@ -36,6 +36,8 @@ properties: - mscc,ocelot-spi - mscc,jaguar2-spi - const: snps,dw-apb-ssi + - description: Microchip Sparx5 SoC SPI Controller + const: microchip,sparx5-spi - description: Amazon Alpine SPI Controller const: amazon,alpine-dw-apb-ssi - description: Renesas RZ/N1 SPI Controller @@ -93,6 +95,12 @@ properties: - const: tx - const: rx + rx-sample-delay-ns: + default: 0 + description: Default value of the rx-sample-delay-ns property. + This value will be used if the property is not explicitly defined + for a SPI slave device. See below. + patternProperties: "^.*@[0-9a-f]+$": type: object @@ -107,6 +115,13 @@ patternProperties: spi-tx-bus-width: const: 1 + rx-sample-delay-ns: + description: SPI Rx sample delay offset, unit is nanoseconds. + The delay from the default sample time before the actual + sample of the rxd input signal occurs. The "rx_sample_delay" + is an optional feature of the designware controller, and the + upper limit is also subject to controller configuration. + unevaluatedProperties: false required: @@ -129,5 +144,11 @@ examples: num-cs = <2>; cs-gpios = <&gpio0 13 0>, <&gpio0 14 0>; + rx-sample-delay-ns = <3>; + spi-flash@1 { + compatible = "spi-nand"; + reg = <1>; + rx-sample-delay-ns = <7>; + }; }; ... -- 2.27.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2020-08-24 20:31 UTC|newest] Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-08-24 20:30 [PATCH v5 0/6] spi: Adding support for Microchip Sparx5 SoC Lars Povlsen 2020-08-24 20:30 ` Lars Povlsen 2020-08-24 20:30 ` [PATCH v5 1/6] spi: dw: Add support for RX sample delay register Lars Povlsen 2020-08-24 20:30 ` Lars Povlsen 2020-08-24 20:30 ` [PATCH v5 2/6] spi: dw: Add Microchip Sparx5 support Lars Povlsen 2020-08-24 20:30 ` Lars Povlsen 2020-08-24 20:30 ` [PATCH v5 3/6] arm64: dts: sparx5: Add SPI controller and associated mmio-mux Lars Povlsen 2020-08-24 20:30 ` Lars Povlsen 2020-08-24 20:30 ` Lars Povlsen [this message] 2020-08-24 20:30 ` [PATCH v5 4/6] dt-bindings: snps, dw-apb-ssi: Add sparx5 support, plus rx-sample-delay-ns property Lars Povlsen 2020-08-28 21:57 ` Rob Herring 2020-08-28 21:57 ` Rob Herring 2020-08-24 20:30 ` [PATCH v5 5/6] arm64: dts: sparx5: Add spi-nor support Lars Povlsen 2020-08-24 20:30 ` Lars Povlsen 2020-08-24 20:30 ` [PATCH v5 6/6] arm64: dts: sparx5: Add spi-nand devices Lars Povlsen 2020-08-24 20:30 ` Lars Povlsen 2020-09-08 17:20 ` [PATCH v5 0/6] spi: Adding support for Microchip Sparx5 SoC Mark Brown 2020-09-08 17:20 ` Mark Brown
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