linux-kernel - [PATCH v3 2/2] ARM: dts: Use last parent for clocks during power domain on/off

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Date:	Thu, 30 Apr 2015 16:05:25 +0900
From:	Krzysztof Kozlowski <k.kozlowski@...sung.com>
To:	Kukjin Kim <kgene@...nel.org>,
	Russell King <linux@....linux.org.uk>,
	Javier Martinez Canillas <javier.martinez@...labora.co.uk>,
	devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:	Chanwoo Choi <cw00.choi@...sung.com>,
	Inki Dae <inki.dae@...sung.com>,
	Marek Szyprowski <m.szyprowski@...sung.com>,
	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
	Andrzej Hajda <a.hajda@...sung.com>,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>
Subject: [PATCH v3 2/2] ARM: dts: Use last parent for clocks during power
 domain on/off

Replace fixed parent with last parent (obtained with clk_get_parent())
of clocks for devices in mfc and disp power domains. This should improve
behavior if such clocks were reparented by the drivers and new parents
are different than those specified in DTS.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@...sung.com>
Reviewed-by: Javier Martinez Canillas <javier.martinez@...labora.co.uk>
Tested-by: Javier Martinez Canillas <javier.martinez@...labora.co.uk>

---

Changes since v2:
1. None.

Changes since v1:
1. Add Javier's reviewed/tested tags. Thanks!
---
 arch/arm/boot/dts/exynos5420.dtsi | 13 ++++---------
 1 file changed, 4 insertions(+), 9 deletions(-)

diff --git a/arch/arm/boot/dts/exynos5420.dtsi b/arch/arm/boot/dts/exynos5420.dtsi
index f67b23f303c3..2e6c95702ced 100644
--- a/arch/arm/boot/dts/exynos5420.dtsi
+++ b/arch/arm/boot/dts/exynos5420.dtsi
@@ -264,9 +264,8 @@
 	mfc_pd: power-domain@...44060 {
 		compatible = "samsung,exynos4210-pd";
 		reg = <0x10044060 0x20>;
-		clocks = <&clock CLK_FIN_PLL>, <&clock CLK_MOUT_SW_ACLK333>,
-			<&clock CLK_MOUT_USER_ACLK333>;
-		clock-names = "oscclk", "pclk0", "clk0";
+		clocks = <&clock CLK_FIN_PLL>, <&clock CLK_MOUT_USER_ACLK333>;
+		clock-names = "oscclk", "clk0";
 		#power-domain-cells = <0>;
 	};
 
@@ -280,16 +279,12 @@
 		compatible = "samsung,exynos4210-pd";
 		reg = <0x100440C0 0x20>;
 		#power-domain-cells = <0>;
-		clocks = <&clock CLK_FIN_PLL>, <&clock CLK_MOUT_SW_ACLK200>,
+		clocks = <&clock CLK_FIN_PLL>,
 			 <&clock CLK_MOUT_USER_ACLK200_DISP1>,
-			 <&clock CLK_MOUT_SW_ACLK300>,
 			 <&clock CLK_MOUT_USER_ACLK300_DISP1>,
-			 <&clock CLK_MOUT_SW_ACLK400>,
 			 <&clock CLK_MOUT_USER_ACLK400_DISP1>,
 			 <&clock CLK_FIMD1>, <&clock CLK_MIXER>;
-		clock-names = "oscclk", "pclk0", "clk0",
-			      "pclk1", "clk1", "pclk2", "clk2",
-			      "asb0", "asb1";
+		clock-names = "oscclk", "clk0", "clk1", "clk2", "asb0", "asb1";
 	};
 
 	pinctrl_0: pinctrl@...00000 {
-- 
1.9.1

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