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clk: qcom: gpucc-msm8998: Add resets, cxc, fix flags on gpu_gx_gdsc

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[ Upstream commit a59c16c80bd791878cf81d1d5aae508eeb2e73f1 ]

The GPU GX GDSC has GPU_GX_BCR reset and gfx3d_clk CXC, as stated
on downstream kernels (and as verified upstream, because otherwise
random lockups happen).
Also, add PWRSTS_RET and NO_RET_PERIPH: also as found downstream,
and also as verified here, to avoid GPU related lockups it is
necessary to force retain mem, but *not* peripheral when enabling
this GDSC (and, of course, the inverse on disablement).

With this change, the GPU finally works flawlessly on my four
different MSM8998 devices from two different manufacturers.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org>
Link: https://lore.kernel.org/r/20210114221059.483390-11-angelogioacchino.delregno@somainline.org
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
AngeloGioacchino Del Regno 2021-01-14 23:10:58 +01:00 committed by Greg Kroah-Hartman
parent 1b0b0c0b9a
commit 73d1a11a19
1 changed files with 6 additions and 2 deletions
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8
drivers/clk/qcom/gpucc-msm8998.c
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@ -253,12 +253,16 @@ static struct gdsc gpu_cx_gdsc = {
static struct gdsc gpu_gx_gdsc = {
.gdscr = 0x1094,
.clamp_io_ctrl = 0x130,
.resets = (unsigned int []){ GPU_GX_BCR },
.reset_count = 1,
.cxcs = (unsigned int []){ 0x1098 },
.cxc_count = 1,
.pd = {
.name = "gpu_gx",
},
.parent = &gpu_cx_gdsc.pd,
.pwrsts = PWRSTS_OFF_ON,
.flags = CLAMP_IO | AON_RESET,
.pwrsts = PWRSTS_OFF_ON | PWRSTS_RET,
.flags = CLAMP_IO | SW_RESET | AON_RESET | NO_RET_PERIPH,
};
static struct clk_regmap *gpucc_msm8998_clocks[] = {