linux-kernel - Re: [RFC PATCH 2/2] drm/panthor: add initial mt8196 support

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Message-ID: <20250904080239.779b5e24@fedora>
Date: Thu, 4 Sep 2025 08:02:39 +0200
From: Boris Brezillon <boris.brezillon@...labora.com>
To: Chia-I Wu <olvaffe@...il.com>
Cc: Steven Price <steven.price@....com>, Liviu Dudau <liviu.dudau@....com>,
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>, Maarten
 Lankhorst <maarten.lankhorst@...ux.intel.com>, Maxime Ripard
 <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, Rob Herring
 <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Matthias Brugger <matthias.bgg@...il.com>,
 AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
 dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 linux-mediatek@...ts.infradead.org
Subject: Re: [RFC PATCH 2/2] drm/panthor: add initial mt8196 support

On Wed,  3 Sep 2025 15:55:04 -0700
Chia-I Wu <olvaffe@...il.com> wrote:

> diff --git a/drivers/gpu/drm/panthor/Makefile b/drivers/gpu/drm/panthor/Makefile
> index 02db21748c125..75e92c461304b 100644
> --- a/drivers/gpu/drm/panthor/Makefile
> +++ b/drivers/gpu/drm/panthor/Makefile
> @@ -12,4 +12,6 @@ panthor-y := \
>  	panthor_mmu.o \
>  	panthor_sched.o
>  
> +panthor-$(CONFIG_DRM_PANTHOR_SOC_MT8196) += panthor_soc_mt8196.o

Based on the stuff you describe (ASN hash, core mask read from an nvmem
cell, extra clks/regulators?), I don't think we need per-soc source
files and per-soc config options. If it becomes too HW specific (no
abstraction to make it SoC-agnostic), we can reconsider the per-SoC
file approach, but I believe it can all live in panthor_drv.c for now.