linux-kernel - [RFC PATCH v1 1/2] ASoC: rockchip-spdif: add description for rk3308

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Message-Id: <20200815112437.6662-1-jbx6244@gmail.com>
Date:   Sat, 15 Aug 2020 13:24:36 +0200
From:   Johan Jonker <jbx6244@...il.com>
To:     heiko@...ech.de
Cc:     robh+dt@...nel.org, lgirdwood@...il.com, broonie@...nel.org,
        sugar.zhang@...k-chips.com, alsa-devel@...a-project.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [RFC PATCH v1 1/2] ASoC: rockchip-spdif: add description for rk3308

A test with the command below shows that the compatible string

"rockchip,rk3308-spdif", "rockchip,rk3328-spdif"

is already in use, but is not added to a document.
The current fallback string "rockchip,rk3328-spdif" points to a data
set enum RK_SPDIF_RK3366 in rockchip_spdif.c that is not used both
in the mainline as in the manufacturer kernel.
(Of the enum only RK_SPDIF_RK3288 is used.)
So if the properties don't change we might as well use the first SoC
in line as fallback string and add the description for rk3308 as:

"rockchip,rk3308-spdif", "rockchip,rk3066-spdif"

make ARCH=arm64 dtbs_check
DT_SCHEMA_FILES=Documentation/devicetree/bindings/sound/rockchip-spdif.yaml

Signed-off-by: Johan Jonker <jbx6244@...il.com>
---
enum rk_spdif_type {
	RK_SPDIF_RK3066,
	RK_SPDIF_RK3188,
	RK_SPDIF_RK3288,
	RK_SPDIF_RK3366,
};

static const struct of_device_id rk_spdif_match[] = {
	{ .compatible = "rockchip,rk3066-spdif",
	  .data = (void *)RK_SPDIF_RK3066 },
	{ .compatible = "rockchip,rk3188-spdif",
	  .data = (void *)RK_SPDIF_RK3188 },
	{ .compatible = "rockchip,rk3228-spdif",
	  .data = (void *)RK_SPDIF_RK3366 },
	{ .compatible = "rockchip,rk3288-spdif",
	  .data = (void *)RK_SPDIF_RK3288 },
	{ .compatible = "rockchip,rk3328-spdif",
	  .data = (void *)RK_SPDIF_RK3366 },
	{ .compatible = "rockchip,rk3366-spdif",
	  .data = (void *)RK_SPDIF_RK3366 },
	{ .compatible = "rockchip,rk3368-spdif",
	  .data = (void *)RK_SPDIF_RK3366 },
	{ .compatible = "rockchip,rk3399-spdif",
	  .data = (void *)RK_SPDIF_RK3366 },
	{},
};
---
 Documentation/devicetree/bindings/sound/rockchip-spdif.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/sound/rockchip-spdif.yaml b/Documentation/devicetree/bindings/sound/rockchip-spdif.yaml
index c46715265..26e986097 100644
--- a/Documentation/devicetree/bindings/sound/rockchip-spdif.yaml
+++ b/Documentation/devicetree/bindings/sound/rockchip-spdif.yaml
@@ -27,6 +27,7 @@ properties:
           - enum:
             - rockchip,rk3188-spdif
             - rockchip,rk3288-spdif
+            - rockchip,rk3308-spdif
           - const: rockchip,rk3066-spdif
 
   reg:
-- 
2.11.0