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gpu: nvgpu: use gm20b.gbus instead of gpcclk

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DVFS constraints for GPU are applied on gbus not on gpcclk. Make T210
K4.4 use gm20b.gbus to change the GPU clk rates and use its parent
clock gbus while querrying DVFS constraints for the GPU.

Bug 200233943

Change-Id: I2bad3266d6b8f8f3806a0d4249d9b40308c2ee6a
Signed-off-by: Srikar Srimath Tirumala <srikars@nvidia.com>
Reviewed-on: http://git-master/r/1275926
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Srikar Srimath Tirumala
2016-12-22 15:09:06 -08:00
committed by mobile promotions
parent 0aba2e99d0
commit 2f74512a09
1 changed files with 0 additions and 3 deletions
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3
drivers/gpu/nvgpu/gm20b/clk_gm20b.c
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@@ -378,9 +378,7 @@ static void clk_config_dvfs(struct gk20a *g, struct pll *gpll)
struct clk* clk;
clk = g->clk.tegra_clk;
#ifdef CONFIG_TEGRA_CLK_FRAMEWORK
clk = clk_get_parent(clk);
#endif
d->mv = tegra_dvfs_predict_mv_at_hz_cur_tfloor(clk,
rate_gpc2clk_to_gpu(gpll->freq));
@@ -1324,7 +1322,6 @@ int gm20b_register_gpcclk(struct gk20a *g) {
}
clk->g = g;
clk->tegra_clk = c;
clk_register_clkdev(c, "gpcclk", "gpcclk");
return err;