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drm/panthor: Wait for _READY register when powering on

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panthor_gpu_block_power_on() takes a register offset (rdy_reg) for the
purpose of waiting for the power transition to complete. However, a
copy/paste error converting to use the new 64 register functions
switched it to using the pwrtrans_reg register instead. Fix the function
to use the correct register.

Fixes: 4d230aa209 ("drm/panthor: Add 64-bit and poll register accessors")
Signed-off-by: Steven Price <steven.price@arm.com>
Reviewed-by: Liviu Dudau <liviu.dudau@arm.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Link: https://lore.kernel.org/r/20250630140704.432409-1-steven.price@arm.com
This commit is contained in:
Steven Price 2025-06-30 15:07:02 +01:00
parent 4dfed55bfb
commit 576fca060f
1 changed files with 3 additions and 2 deletions
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5
drivers/gpu/drm/panthor/panthor_gpu.c
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@ -297,8 +297,9 @@ int panthor_gpu_block_power_on(struct panthor_device *ptdev,
gpu_write64(ptdev, pwron_reg, mask);
ret = gpu_read64_relaxed_poll_timeout(ptdev, pwrtrans_reg, val,
!(mask & val), 100, timeout_us);
ret = gpu_read64_relaxed_poll_timeout(ptdev, rdy_reg, val,
(mask & val) == val,
100, timeout_us);
if (ret) {
drm_err(&ptdev->base, "timeout waiting on %s:%llx readiness",
blk_name, mask);