linux-kernel - Re: [PATCH v2 06/12] media: hantro: add support for Rockchip RK3066

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Date:   Fri, 11 Jun 2021 12:50:50 -0300
From:   Ezequiel Garcia <ezequiel@...labora.com>
To:     Alex Bee <knaerzche@...il.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Heiko Stuebner <heiko@...ech.de>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Lee Jones <lee.jones@...aro.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-media@...r.kernel.org, linux-rockchip@...ts.infradead.org,
        devicetree@...r.kernel.org
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 06/12] media: hantro: add support for Rockchip RK3066

Hi Alex,

On Thu, 2021-05-27 at 17:44 +0200, Alex Bee wrote:
> RK3066's VPU IP block is the predecessor from what RK3288 has.
> The hardware differences are:
>   - supports decoding frame sizes up to 1920x1088 only
>   - doesn't have the 'G1_REG_SOFT_RESET' register
>     (requires another .reset callback for hantro_codec_ops,
>      since writing this register will result in non-working
>      IP block)
>   - has one ACLK/HCLK per vdpu/vepu
>   - ACLKs can be clocked up to 300 MHz only

Have you tested trying 400 MHz (or more) ?

>   - no MMU
>     (no changes required: CMA will be transparently used)
> 
> Add a new RK3066 variant which reflect this differences. This variant
> can be used for RK3188 as well.
> 

Reviewed-by: Ezequiel Garcia <ezequiel@...labora.com>

Thanks!
Ezequiel