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    Subject[PATCH 5.1 111/155] ARM: dts: imx6ul: Specify IMX6UL_CLK_IPG as "ipg" clock to SDMA
    Date
    [ Upstream commit 7b3132ecefdd1fcdf6b86e62021d0e55ea8034db ]

    Since 25aaa75df1e6 SDMA driver uses clock rates of "ipg" and "ahb"
    clock to determine if it needs to configure the IP block as operating
    at 1:1 or 1:2 clock ratio (ACR bit in SDMAARM_CONFIG). Specifying both
    clocks as IMX6UL_CLK_SDMA results in driver incorrectly thinking that
    ratio is 1:1 which results in broken SDMA funtionality. Fix the code
    to specify IMX6UL_CLK_IPG as "ipg" clock for SDMA, to avoid detecting
    incorrect clock ratio.

    Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
    Cc: Angus Ainslie (Purism) <angus@akkea.ca>
    Cc: Chris Healy <cphealy@gmail.com>
    Cc: Lucas Stach <l.stach@pengutronix.de>
    Cc: Fabio Estevam <fabio.estevam@nxp.com>
    Cc: Shawn Guo <shawnguo@kernel.org>
    Cc: linux-arm-kernel@lists.infradead.org
    Cc: linux-kernel@vger.kernel.org
    Signed-off-by: Shawn Guo <shawnguo@kernel.org>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    arch/arm/boot/dts/imx6ul.dtsi | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    diff --git a/arch/arm/boot/dts/imx6ul.dtsi b/arch/arm/boot/dts/imx6ul.dtsi
    index 62ed30c781ed..facd65602c2d 100644
    --- a/arch/arm/boot/dts/imx6ul.dtsi
    +++ b/arch/arm/boot/dts/imx6ul.dtsi
    @@ -708,7 +708,7 @@
    "fsl,imx35-sdma";
    reg = <0x020ec000 0x4000>;
    interrupts = <GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>;
    - clocks = <&clks IMX6UL_CLK_SDMA>,
    + clocks = <&clks IMX6UL_CLK_IPG>,
    <&clks IMX6UL_CLK_SDMA>;
    clock-names = "ipg", "ahb";
    #dma-cells = <3>;
    --
    2.20.1


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