Re: [PATCH v12 4/4] drm/imagination: Enable PowerVR driver for RISC-V

[Matt Coster <Matt.Coster@imgtec.com>]

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On 20/08/2025 09:55, Michal Wilczynski wrote:
> Several RISC-V boards feature Imagination GPUs that are compatible with
> the PowerVR driver. An example is the IMG BXM-4-64 GPU on the Lichee Pi
> 4A board. This commit adjusts the driver's Kconfig dependencies to allow
> the PowerVR driver to be compiled on the RISC-V architecture.
> 
> By enabling compilation on RISC-V, we expand support for these GPUs,
> providing graphics acceleration capabilities and enhancing hardware
> compatibility on RISC-V platforms.
> 
> The RISC-V support is restricted to 64-bit systems (RISCV && 64BIT) as
> the driver currently has an implicit dependency on a 64-bit platform.
> 
> Add a dependency on MMU to fix a build warning on RISC-V configurations
> without an MMU.
> 
> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
> Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
> Signed-off-by: Michal Wilczynski <m.wilczynski@samsung.com>

Reviewed-by: Matt Coster <matt.coster@imgtec.com>

Cheers,
Matt

> ---
>  drivers/gpu/drm/imagination/Kconfig | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/imagination/Kconfig b/drivers/gpu/drm/imagination/Kconfig
> index 3bfa2ac212dccb73c53bdc2bc259bcba636e7cfc..682dd2633d0c012df18d0f7144d029b67a14d241 100644
> --- a/drivers/gpu/drm/imagination/Kconfig
> +++ b/drivers/gpu/drm/imagination/Kconfig
> @@ -3,8 +3,9 @@
>  
>  config DRM_POWERVR
>  	tristate "Imagination Technologies PowerVR (Series 6 and later) & IMG Graphics"
> -	depends on ARM64
> +	depends on (ARM64 || RISCV && 64BIT)
>  	depends on DRM
> +	depends on MMU
>  	depends on PM
>  	select DRM_EXEC
>  	select DRM_GEM_SHMEM_HELPER
> 


-- 
Matt Coster
E: matt.coster@imgtec.com

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