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Commit ffc94db8 authored by Harshdeep Dhatt's avatar Harshdeep Dhatt
Browse files

msm: kgsl: Scale hub clock to 150 Mhz 



This is a new clock in a660 which needs to be run at
150 Mhz instead of running at 19.2 Mhz by default.

Also, there is no need to store a gmu_clk pointer
so get rid of it too.

Change-Id: If2741c061339e914683ca25565d1bac3ec6ac100
Signed-off-by: default avatarHarshdeep Dhatt <hdhatt@codeaurora.org>
parent f7f07211

drivers/gpu/msm/kgsl_gmu.c

+20 −10
Original line number Diff line number Diff line
@@ -1309,14 +1309,6 @@ static int gmu_probe(struct kgsl_device *device, struct platform_device *pdev) 


	gmu->num_clks = ret;



	/* Get a pointer to the GMU clock */

	gmu->gmu_clk = kgsl_of_clk_by_name(gmu->clks, gmu->num_clks, "gmu_clk");

	if (!gmu->gmu_clk) {

		dev_err(&pdev->dev, "Couldn't get gmu_clk\n");

		ret = -ENODEV;

		goto error;

	}



	/* Set up GMU IOMMU and shared memory with GMU */

	ret = gmu_iommu_init(gmu, pdev->dev.of_node);

	if (ret)
@@ -1406,14 +1398,32 @@ static int gmu_probe(struct kgsl_device *device, struct platform_device *pdev) 
	return ret;

}



static int gmu_clk_set_rate(struct gmu_device *gmu, const char *id,

	unsigned long rate)

{

	struct clk *clk;



	clk = kgsl_of_clk_by_name(gmu->clks, gmu->num_clks, id);

	if (!clk)

		return -ENODEV;



	return clk_set_rate(clk, rate);

}



static int gmu_enable_clks(struct kgsl_device *device)

{

	struct gmu_device *gmu = KGSL_GMU_DEVICE(device);

	int ret;



	ret = clk_set_rate(gmu->gmu_clk, GMU_FREQUENCY);

	ret = gmu_clk_set_rate(gmu, "gmu_clk", GMU_FREQUENCY);

	if (ret) {

		dev_err(&gmu->pdev->dev, "Unable to set GMU clock\n");

		dev_err(&gmu->pdev->dev, "Unable to set the GMU clock\n");

		return ret;

	}



	ret = gmu_clk_set_rate(gmu, "hub_clk", 150000000);

	if (ret && ret != ENODEV) {

		dev_err(&gmu->pdev->dev, "Unable to set the HUB clock\n");

		return ret;

	}

drivers/gpu/msm/kgsl_gmu.h

+0 −2
Original line number Diff line number Diff line
@@ -194,8 +194,6 @@ struct gmu_device { 
	struct clk_bulk_data *clks;

	/** @num_clks: Number of entries in the @clks array */

	int num_clks;

	/** @gmu_clk: Pointer to the core GMU clock */

	struct clk *gmu_clk;

	enum gmu_load_mode load_mode;

	unsigned int wakeup_pwrlevel;

	unsigned int idle_level;