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@xxxxxxxxxxxxx>
Thanks!
Ezequiel
