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Commit 73bf88d6 authored by Hareesh Gundu's avatar Hareesh Gundu Committed by Gerrit - the friendly Code Review server
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msm: kgsl: Add support for always-on clock 



Always on clock is being used for staggering logic
present in GPU to avoid voltage droop when powering
up and down the GPU.

Change-Id: Ib466148aa9b297698159e3d37ceb7f55aa0be7a6
Signed-off-by: default avatarHareesh Gundu <hareeshg@codeaurora.org>
parent 0dc787c3

Documentation/devicetree/bindings/gpu/adreno.txt

+2 −1
Original line number Diff line number Diff line
@@ -23,6 +23,7 @@ Required properties: 
				KGSL_CLK_MEM_IFACE 0x00000010

				KGSL_CLK_AXI    0x00000020

				KGSL_CLK_RBBMTIMER 0x00000080

				KGSL_CLK_ALWAYSON 0x00000800



- clocks:		List of phandle and clock specifier pairs, one pair

			for each clock input to the device.
@@ -30,7 +31,7 @@ Required properties: 
			order as the clocks property.

				Current values of clock-names are:

				"src_clk", "core_clk", "iface_clk", "mem_clk", "mem_iface_clk",

				"alt_mem_iface_clk", "rbbmtimer_clk"

				"alt_mem_iface_clk", "rbbmtimer_clk",  "alwayson_clk"

				"core_clk" and "iface_clk" are required and others are optional



- qcom,gpu-efuse-leakage:	memory region for GPU power rail leakage.

drivers/gpu/msm/kgsl_pwrctrl.c

+4 −0
Original line number Diff line number Diff line
@@ -96,6 +96,10 @@ static struct clk_pair clks[KGSL_MAX_CLKS] = { 
		.name = "gtbu_clk",

		.map = KGSL_CLK_GFX_GTBU,

	},

	{

		.name = "alwayson_clk",

		.map = KGSL_CLK_ALWAYSON,

	},

};



static struct clk_pair dummy_mx_clk = {

drivers/gpu/msm/kgsl_pwrctrl.h

+1 −1
Original line number Diff line number Diff line
@@ -25,7 +25,7 @@ 


#define KGSL_PWR_ON	0xFFFF



#define KGSL_MAX_CLKS 9

#define KGSL_MAX_CLKS 10



#define KGSL_MAX_REGULATORS 2

#define KGSL_MAX_REGULATOR_NAME_LEN 8

include/linux/msm_kgsl.h

+1 −0
Original line number Diff line number Diff line
@@ -15,6 +15,7 @@ 
#define KGSL_CLK_GFX_GTCU   0x00000100

#define KGSL_CLK_GFX_GTBU   0x00000200

#define KGSL_CLK_MX	0x00000400

#define KGSL_CLK_ALWAYSON   0x00000800



#define KGSL_MAX_PWRLEVELS 10