[PATCH 4.14 56/81] ARM: dts: imx7d: Specify IMX7D_CLK_IPG as "ipg" clock to SDMA

Greg Kroah-Hartman
2019-06-13T16:24:54Z

[ Upstream commit 412b032a1dc72fc9d1c258800355efa6671b6315 ]

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 IMX7D_CLK_SDMA results in driver incorrectly thinking that
ratio is 1:1 which results in broken SDMA funtionality. Fix the code
to specify IMX7D_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/imx7s.dtsi | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/boot/dts/imx7s.dtsi b/arch/arm/boot/dts/imx7s.dtsi
index 82ad26e766eb..bf15efbe8a71 100644
--- a/arch/arm/boot/dts/imx7s.dtsi
+++ b/arch/arm/boot/dts/imx7s.dtsi
@@ -997,8 +997,8 @@
compatible = "fsl,imx7d-sdma", "fsl,imx35-sdma";
reg = <0x30bd0000 0x10000>;
interrupts = <GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>;
- clocks = <&clks IMX7D_SDMA_CORE_CLK>,
- <&clks IMX7D_AHB_CHANNEL_ROOT_CLK>;
+ clocks = <&clks IMX7D_IPG_ROOT_CLK>,
+ <&clks IMX7D_SDMA_CORE_CLK>;
clock-names = "ipg", "ahb";
#dma-cells = <3>;
fsl,sdma-ram-script-name = "imx/sdma/sdma-imx7d.bin";
--
2.20.1