Commit 576fca06 authored by Steven Price's avatar Steven Price
Browse files

drm/panthor: Wait for _READY register when powering on 



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: 4d230aa2 ("drm/panthor: Add 64-bit and poll register accessors")
Signed-off-by: default avatarSteven Price <steven.price@arm.com>
Reviewed-by: default avatarLiviu Dudau <liviu.dudau@arm.com>
Reviewed-by: default avatarBoris Brezillon <boris.brezillon@collabora.com>
Link: https://lore.kernel.org/r/20250630140704.432409-1-steven.price@arm.com
parent 4dfed55b

drivers/gpu/drm/panthor/panthor_gpu.c

+3 −2
Original line number Diff line number Diff line
@@ -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);