From: Andrey Smirnov <andrew.smirnov@gmail.com>
To: Shawn Guo <shawnguo@kernel.org>
Cc: Andrey Smirnov <andrew.smirnov@gmail.com>,
Angus Ainslie <angus@akkea.ca>, Chris Healy <cphealy@gmail.com>,
Lucas Stach <l.stach@pengutronix.de>,
Fabio Estevam <fabio.estevam@nxp.com>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: [PATCH v2 3/3] ARM: dts: imx7d: Specify IMX7D_CLK_IPG as "ipg" clock to SDMA
Date: Tue, 26 Mar 2019 23:34:51 -0700 [thread overview]
Message-ID: <20190327063451.25629-3-andrew.smirnov@gmail.com> (raw)
In-Reply-To: <20190327063451.25629-1-andrew.smirnov@gmail.com>
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 result in driver incorrectly thinking that
ratio is 1:1 which results in broken SDMA functionality. Fix the code
to specify IMX7D_CLK_IPG as "ipg" clock for SDMA, to avoid detecting
incorrect clock ratio.
Fixes: 25aaa75df1e6 ("dmaengine: imx-sdma: add clock ratio 1:1 check")
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
---
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 e88f53a4c7f4..2f45ef527e6c 100644
--- a/arch/arm/boot/dts/imx7s.dtsi
+++ b/arch/arm/boot/dts/imx7s.dtsi
@@ -1067,8 +1067,8 @@
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
prev parent reply other threads:[~2019-03-27 6:35 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-27 6:34 [PATCH v2 1/3] ARM: dts: imx6qdl: Specify IMX6QDL_CLK_IPG as "ipg" clock to SDMA Andrey Smirnov
2019-03-27 6:34 ` [PATCH v2 2/3] ARM: dts: imx6sx: Specify IMX6SX_CLK_IPG " Andrey Smirnov
2019-03-27 6:34 ` Andrey Smirnov [this message]
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