Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Message-ID: <90ef166f-fe36-e243-6eee-516500986c6f@ideasonboard.com>
Date:   Wed, 12 Oct 2022 14:40:42 +0300
MIME-Version: 1.0
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101
 Thunderbird/102.2.2
Subject: Re: [RFC PATCH v5 3/6] drm/tidss: Add support for AM625 DSS
Content-Language: en-US
To:     Aradhya Bhatia <a-bhatia1@ti.com>, Jyri Sarha <jyri.sarha@iki.fi>,
        Rob Herring <robh+dt@kernel.org>,
        David Airlie <airlied@linux.ie>,
        Daniel Vetter <daniel@ffwll.ch>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>
Cc:     Nishanth Menon <nm@ti.com>, Vignesh Raghavendra <vigneshr@ti.com>,
        Rahul T R <r-ravikumar@ti.com>,
        DRI Development List <dri-devel@lists.freedesktop.org>,
        Devicetree List <devicetree@vger.kernel.org>,
        Linux Kernel List <linux-kernel@vger.kernel.org>
References: <20220928175223.15225-1-a-bhatia1@ti.com>
 <20220928175223.15225-4-a-bhatia1@ti.com>
From:   Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
In-Reply-To: <20220928175223.15225-4-a-bhatia1@ti.com>
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
Precedence: bulk

On 28/09/2022 20:52, Aradhya Bhatia wrote:
> Add support for the DSS controller on TI's new AM625 SoC in the tidss
> driver.
> 
> The first video port (VP0) in am625-dss can output OLDI signals through
> 2 OLDI TXes. A 3rd port has been added with "DISPC_VP_OLDI" bus type.
> 
> Signed-off-by: Aradhya Bhatia <a-bhatia1@ti.com>
> ---
>   drivers/gpu/drm/tidss/tidss_dispc.c | 61 ++++++++++++++++++++++++++++-
>   drivers/gpu/drm/tidss/tidss_dispc.h |  3 ++
>   drivers/gpu/drm/tidss/tidss_drv.c   |  1 +
>   3 files changed, 64 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/tidss/tidss_dispc.c b/drivers/gpu/drm/tidss/tidss_dispc.c
> index dd3c6a606ae2..34f0da4bb3e3 100644
> --- a/drivers/gpu/drm/tidss/tidss_dispc.c
> +++ b/drivers/gpu/drm/tidss/tidss_dispc.c
> @@ -93,6 +93,7 @@ const struct dispc_features dispc_k2g_feats = {
>   	.common_regs = tidss_k2g_common_regs,
>   
>   	.num_vps = 1,
> +	.num_max_ports = 1,

I would just use "num_ports" here, as it describes the HW (e.g. we have 
num_vps = 4 for J7, even if we'd only use one of the VPs).

I would also rename "TIDSS_MAX_PORTS". Maybe TIDSS_MAX_VPS. And check 
carefully that it's never used for the output ports.

Or maybe this field should be "num_output_ports", and try to use "output 
port" term in the driver for the..., well, output ports, to make the 
distinction between the videoport and output port more clear.

  Tomi