Thread (28 messages) flat view 28 messages, 5 authors, 2015-02-25
STALE4184d

[PATCH v2 2/4] ARM: sti: stih407-family: Provide Clock Domain information

From: Lee Jones <hidden>
Date: 2015-02-18 16:15:17
Also in: linux-devicetree, lkml
Subsystem: the rest · Maintainer: Linus Torvalds

Certain clocks should not be turned of by clk_disable_unused.  Until
now we have been using the kernel command-line of the same name to
prevent common clk from turning off all clocks without a reference,
as this would ensure hardware lockup.  This patch lists each clock
which need to stay on to prevent the aforementioned issue from
arising.

Signed-off-by: Lee Jones <redacted>
---
 arch/arm/boot/dts/stih407-family.dtsi | 13 +++++++++++++
 1 file changed, 13 insertions(+)
diff --git a/arch/arm/boot/dts/stih407-family.dtsi b/arch/arm/boot/dts/stih407-family.dtsi
index 3e31d32..49af509 100644
--- a/arch/arm/boot/dts/stih407-family.dtsi
+++ b/arch/arm/boot/dts/stih407-family.dtsi
@@ -34,6 +34,19 @@
 		reg = <0x08761000 0x1000>, <0x08760100 0x100>;
 	};
 
+	clk-domain {
+		compatible = "always-on-clk-domain";
+		clocks = <&clk_s_c0_flexgen CLK_EXT2F_A9>,
+			 <&clk_s_c0_flexgen CLK_COMPO_DVP>,
+			 <&clk_s_c0_flexgen CLK_MMC_1>,
+			 <&clk_s_c0_flexgen CLK_ICN_SBC>,
+			 <&clk_s_c0_flexgen CLK_ICN_LMI>,
+			 <&clk_s_c0_flexgen CLK_ICN_CPU>,
+			 <&clk_s_c0_flexgen CLK_TX_ICN_DMU>,
+			 <&clk_s_a0_flexgen CLK_IC_LMI0>,
+			 <&clk_m_a9>;
+	};
+
 	scu at 08760000 {
 		compatible = "arm,cortex-a9-scu";
 		reg = <0x08760000 0x1000>;
-- 
1.9.1
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