From mboxrd@z Thu Jan 1 00:00:00 1970 From: jay.xu@rock-chips.com (Jianqun Xu) Date: Wed, 19 Nov 2014 16:07:27 +0800 Subject: [PATCH v2 1/2] ASoC: rockchip-i2s: dt: add an optional property "i2s_clk_out" In-Reply-To: <1416366365-4632-2-git-send-email-jay.xu@rock-chips.com> References: <1416366365-4632-2-git-send-email-jay.xu@rock-chips.com> Message-ID: <1416384447-29391-1-git-send-email-jay.xu@rock-chips.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Add an property "i2s_clk_out", which enables to output clock to outside of rockchip SoCs. Let's make it optional since not each board needs it. Signed-off-by: Jianqun Xu --- changes since v1: - make "i2s_clk_out" optional, suggested by Sonny Documentation/devicetree/bindings/sound/rockchip-i2s.txt | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/sound/rockchip-i2s.txt b/Documentation/devicetree/bindings/sound/rockchip-i2s.txt index 9b82c20..6dedd0d 100644 --- a/Documentation/devicetree/bindings/sound/rockchip-i2s.txt +++ b/Documentation/devicetree/bindings/sound/rockchip-i2s.txt @@ -22,6 +22,10 @@ Required properties: - "i2s_hclk": clock for I2S BUS - "i2s_clk" : clock for I2S controller +Optional property: + - "i2s_clk_out" : clock output to outside of chip, usally as master clock for audio + codec chip + Example for rk3288 I2S controller: i2s at ff890000 { @@ -32,6 +36,6 @@ i2s at ff890000 { #size-cells = <0>; dmas = <&pdma1 0>, <&pdma1 1>; dma-names = "tx", "rx"; - clock-names = "i2s_hclk", "i2s_clk"; - clocks = <&cru HCLK_I2S0>, <&cru SCLK_I2S0>; + clock-names = "i2s_hclk", "i2s_clk", "i2s_clk_out"; + clocks = <&cru HCLK_I2S0>, <&cru SCLK_I2S0>, <&cru SCLK_I2S0_CLKOUT>; }; -- 1.9.1