linux-kernel - Re: [PATCH v4 5/7] drm/etnaviv: add HWDB entry for VIPNano-QI.7120.0055

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Date:   Thu, 01 Dec 2022 10:48:25 +0100
From:   Lucas Stach <l.stach@...gutronix.de>
To:     Tomeu Vizoso <tomeu.vizoso@...labora.com>
Cc:     italonicola@...labora.com,
        "moderated list:DRM DRIVERS FOR VIVANTE GPU IP" 
        <etnaviv@...ts.freedesktop.org>,
        "open list:DRM DRIVERS FOR VIVANTE GPU IP" 
        <dri-devel@...ts.freedesktop.org>,
        open list <linux-kernel@...r.kernel.org>,
        Christian Gmeiner <christian.gmeiner@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Russell King <linux+etnaviv@...linux.org.uk>,
        David Airlie <airlied@...il.com>
Subject: Re: [PATCH v4 5/7] drm/etnaviv: add HWDB entry for
 VIPNano-QI.7120.0055

Hi Tomeu,

the changes itself look good to me now, I was just very confused about
the ordering of the patches.

I would have expected them to be in this order:
1. Add NN cores to chip identities struct (set to 0 for all existing
entries in HWDB)
2. Add UAPI warning
3. Add HWDB entry for VIPNano-QI.7120.0055 (having NN cores set to
correct value, so you don't touch the entry twice in the same series)

Regards,
Lucas

Am Donnerstag, dem 01.12.2022 um 10:21 +0100 schrieb Tomeu Vizoso:
> This is a compute-only module marketed towards AI and vision
> acceleration. This particular version can be found on the Amlogic A311D
> SoC.
> 
> The feature bits are taken from the Khadas downstream kernel driver
> 6.4.4.3.310723AAA.
> 
> Signed-off-by: Tomeu Vizoso <tomeu.vizoso@...labora.com>
> ---
>  drivers/gpu/drm/etnaviv/etnaviv_hwdb.c | 31 ++++++++++++++++++++++++++
>  1 file changed, 31 insertions(+)
> 
> diff --git a/drivers/gpu/drm/etnaviv/etnaviv_hwdb.c b/drivers/gpu/drm/etnaviv/etnaviv_hwdb.c
> index f2fc645c7956..3f6fd9a3c088 100644
> --- a/drivers/gpu/drm/etnaviv/etnaviv_hwdb.c
> +++ b/drivers/gpu/drm/etnaviv/etnaviv_hwdb.c
> @@ -130,6 +130,37 @@ static const struct etnaviv_chip_identity etnaviv_chip_identities[] = {
>  		.minor_features10 = 0x90044250,
>  		.minor_features11 = 0x00000024,
>  	},
> +	{
> +		.model = 0x8000,
> +		.revision = 0x7120,
> +		.product_id = 0x45080009,
> +		.customer_id = 0x88,
> +		.eco_id = 0,
> +		.stream_count = 8,
> +		.register_max = 64,
> +		.thread_count = 256,
> +		.shader_core_count = 1,
> +		.vertex_cache_size = 16,
> +		.vertex_output_buffer_size = 1024,
> +		.pixel_pipes = 1,
> +		.instruction_count = 512,
> +		.num_constants = 320,
> +		.buffer_size = 0,
> +		.varyings_count = 16,
> +		.features = 0xe0287cac,
> +		.minor_features0 = 0xc1799eff,
> +		.minor_features1 = 0xfefbfadb,
> +		.minor_features2 = 0xeb9d6fbf,
> +		.minor_features3 = 0xedfffced,
> +		.minor_features4 = 0xd30dafc7,
> +		.minor_features5 = 0x7b5ac333,
> +		.minor_features6 = 0xfc8ee200,
> +		.minor_features7 = 0x03fffa6f,
> +		.minor_features8 = 0x00fe0ef0,
> +		.minor_features9 = 0x0088003c,
> +		.minor_features10 = 0x108048c0,
> +		.minor_features11 = 0x00000010,
> +	},
>  };
>  
>  bool etnaviv_fill_identity_from_hwdb(struct etnaviv_gpu *gpu)