From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Sasha Levin <sashal@kernel.org>,
Andrey Smirnov <andrew.smirnov@gmail.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
"Angus Ainslie \(Purism\)" <angus@akkea.ca>,
stable@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
Fabio Estevam <fabio.estevam@nxp.com>,
Adam Ford <aford173@gmail.com>, Shawn Guo <shawnguo@kernel.org>,
Chris Healy <cphealy@gmail.com>,
Lucas Stach <l.stach@pengutronix.de>
Subject: [PATCH 4.9 041/117] ARM: dts: imx6qdl: Specify IMX6QDL_CLK_IPG as "ipg" clock to SDMA
Date: Thu, 20 Jun 2019 19:56:15 +0200 [thread overview]
Message-ID: <20190620174354.452331200@linuxfoundation.org> (raw)
In-Reply-To: <20190620174351.964339809@linuxfoundation.org>
[ Upstream commit b14c872eebc501b9640b04f4a152df51d6eaf2fc ]
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 IMX6QDL_CLK_SDMA results in driver incorrectly thinking that
ratio is 1:1 which results in broken SDMA funtionality(this at least
breaks RAVE SP serdev driver on RDU2). Fix the code to specify
IMX6QDL_CLK_IPG as "ipg" clock for SDMA, to avoid detecting incorrect
clock ratio.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
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
Tested-by: Adam Ford <aford173@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/arm/boot/dts/imx6qdl.dtsi | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/boot/dts/imx6qdl.dtsi b/arch/arm/boot/dts/imx6qdl.dtsi
index b13b0b2db881..8ccafdfbe87c 100644
--- a/arch/arm/boot/dts/imx6qdl.dtsi
+++ b/arch/arm/boot/dts/imx6qdl.dtsi
@@ -875,7 +875,7 @@
compatible = "fsl,imx6q-sdma", "fsl,imx35-sdma";
reg = <0x020ec000 0x4000>;
interrupts = <0 2 IRQ_TYPE_LEVEL_HIGH>;
- clocks = <&clks IMX6QDL_CLK_SDMA>,
+ clocks = <&clks IMX6QDL_CLK_IPG>,
<&clks IMX6QDL_CLK_SDMA>;
clock-names = "ipg", "ahb";
#dma-cells = <3>;
--
2.20.1
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prev parent reply other threads:[~2019-06-20 18:05 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20190620174351.964339809@linuxfoundation.org>
2019-06-20 17:56 ` [PATCH 4.9 037/117] ARM: dts: imx6sx: Specify IMX6SX_CLK_IPG as "ahb" clock to SDMA Greg Kroah-Hartman
2019-06-20 17:56 ` [PATCH 4.9 038/117] ARM: dts: imx7d: Specify IMX7D_CLK_IPG as "ipg" " Greg Kroah-Hartman
2019-06-20 17:56 ` [PATCH 4.9 039/117] ARM: dts: imx6ul: Specify IMX6UL_CLK_IPG " Greg Kroah-Hartman
2019-06-20 17:56 ` [PATCH 4.9 040/117] ARM: dts: imx6sx: Specify IMX6SX_CLK_IPG " Greg Kroah-Hartman
2019-06-20 17:56 ` Greg Kroah-Hartman [this message]
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