All of lore.kernel.org
 help / color / mirror / Atom feed
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 v3 8/9] ARM: dts: imx51: Specify IMX5_CLK_IPG as "ahb" clock to SDMA
Date: Thu, 28 Mar 2019 23:49:23 -0700	[thread overview]
Message-ID: <20190329064924.8728-8-andrew.smirnov@gmail.com> (raw)
In-Reply-To: <20190329064924.8728-1-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 IMX5_CLK_SDMA results in driver incorrectly thinking that
ratio is 1:1 which results in broken SDMA funtionality. Fix the code
to specify IMX5_CLK_AHB as "ahb" 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/imx51.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/imx51.dtsi b/arch/arm/boot/dts/imx51.dtsi
index 0b28b68a17bb..e3fa3d213cd8 100644
--- a/arch/arm/boot/dts/imx51.dtsi
+++ b/arch/arm/boot/dts/imx51.dtsi
@@ -502,7 +502,7 @@
 				reg = <0x83fb0000 0x4000>;
 				interrupts = <6>;
 				clocks = <&clks IMX5_CLK_SDMA_GATE>,
-					 <&clks IMX5_CLK_SDMA_GATE>;
+					 <&clks IMX5_CLK_AHB>;
 				clock-names = "ipg", "ahb";
 				#dma-cells = <3>;
 				fsl,sdma-ram-script-name = "imx/sdma/sdma-imx51.bin";
-- 
2.20.1


WARNING: multiple messages have this Message-ID (diff)
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>,
	linux-kernel@vger.kernel.org, Chris Healy <cphealy@gmail.com>,
	Fabio Estevam <fabio.estevam@nxp.com>,
	linux-arm-kernel@lists.infradead.org,
	Lucas Stach <l.stach@pengutronix.de>
Subject: [PATCH v3 8/9] ARM: dts: imx51: Specify IMX5_CLK_IPG as "ahb" clock to SDMA
Date: Thu, 28 Mar 2019 23:49:23 -0700	[thread overview]
Message-ID: <20190329064924.8728-8-andrew.smirnov@gmail.com> (raw)
In-Reply-To: <20190329064924.8728-1-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 IMX5_CLK_SDMA results in driver incorrectly thinking that
ratio is 1:1 which results in broken SDMA funtionality. Fix the code
to specify IMX5_CLK_AHB as "ahb" 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/imx51.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/imx51.dtsi b/arch/arm/boot/dts/imx51.dtsi
index 0b28b68a17bb..e3fa3d213cd8 100644
--- a/arch/arm/boot/dts/imx51.dtsi
+++ b/arch/arm/boot/dts/imx51.dtsi
@@ -502,7 +502,7 @@
 				reg = <0x83fb0000 0x4000>;
 				interrupts = <6>;
 				clocks = <&clks IMX5_CLK_SDMA_GATE>,
-					 <&clks IMX5_CLK_SDMA_GATE>;
+					 <&clks IMX5_CLK_AHB>;
 				clock-names = "ipg", "ahb";
 				#dma-cells = <3>;
 				fsl,sdma-ram-script-name = "imx/sdma/sdma-imx51.bin";
-- 
2.20.1


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  parent reply	other threads:[~2019-03-29  6:50 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-03-29  6:49 [PATCH v3 1/9] ARM: dts: imx6qdl: Specify IMX6QDL_CLK_IPG as "ipg" clock to SDMA Andrey Smirnov
2019-03-29  6:49 ` Andrey Smirnov
2019-03-29  6:49 ` [PATCH v3 2/9] ARM: dts: imx6sx: Specify IMX6SX_CLK_IPG " Andrey Smirnov
2019-03-29  6:49   ` Andrey Smirnov
2019-03-29  6:49 ` [PATCH v3 3/9] ARM: dts: imx7d: Specify IMX7D_CLK_IPG " Andrey Smirnov
2019-03-29  6:49   ` Andrey Smirnov
2019-03-29  6:49 ` [PATCH v3 4/9] ARM: dts: imx6ul: Specify IMX6UL_CLK_IPG " Andrey Smirnov
2019-03-29  6:49   ` Andrey Smirnov
2019-03-29  6:49 ` [PATCH v3 5/9] ARM: dts: imx6sll: Specify IMX6SLL_CLK_IPG " Andrey Smirnov
2019-03-29  6:49   ` Andrey Smirnov
2019-03-29  6:49 ` [PATCH v3 6/9] ARM: dts: imx6sx: Specify IMX6SX_CLK_IPG as "ahb" " Andrey Smirnov
2019-03-29  6:49   ` Andrey Smirnov
2019-03-29  6:49 ` [PATCH v3 7/9] ARM: dts: imx53: Specify IMX5_CLK_IPG " Andrey Smirnov
2019-03-29  6:49   ` Andrey Smirnov
2019-03-29  6:49 ` Andrey Smirnov [this message]
2019-03-29  6:49   ` [PATCH v3 8/9] ARM: dts: imx51: " Andrey Smirnov
2019-03-29  6:49 ` [PATCH v3 9/9] ARM: dts: imx50: " Andrey Smirnov
2019-03-29  6:49   ` Andrey Smirnov
2019-04-10 18:47 ` [PATCH v3 1/9] ARM: dts: imx6qdl: Specify IMX6QDL_CLK_IPG as "ipg" " Adam Ford
2019-04-10 18:47   ` Adam Ford
2019-04-11  2:30 ` Shawn Guo
2019-04-11  2:30   ` Shawn Guo
2019-04-20 12:14   ` Adam Ford
2019-04-20 12:14     ` Adam Ford
2019-04-20 13:33     ` Shawn Guo
2019-04-20 13:33       ` Shawn Guo

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20190329064924.8728-8-andrew.smirnov@gmail.com \
    --to=andrew.smirnov@gmail.com \
    --cc=angus@akkea.ca \
    --cc=cphealy@gmail.com \
    --cc=fabio.estevam@nxp.com \
    --cc=l.stach@pengutronix.de \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=shawnguo@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.