Messages in this thread | | | Subject | Re: [PATCH v2 06/12] media: hantro: add support for Rockchip RK3066 | From | Alex Bee <> | Date | Mon, 14 Jun 2021 18:46:49 +0200 |
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Hi Ezequiel,
Am 11.06.21 um 17:50 schrieb Ezequiel Garcia: > 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) ?
Yes, I've tried this on both RK3066 and RK3036 variants - everything above 300 MHz results in non-functioning IP block.
See comment in RK3036 devicetree in vendor kernel at [1].
[1] https://github.com/rockchip-linux/kernel/blob/develop-4.4/arch/arm/boot/dts/rk3036.dtsi#L246-L248
> >> - 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@collabora.com> > > Thanks! > Ezequiel >
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