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From:   Jernej =?utf-8?B?xaBrcmFiZWM=?= <jernej.skrabec@gmail.com>
To:     Chen-Yu Tsai <wens@csie.org>, Maxime Ripard <mripard@kernel.org>,
        Samuel Holland <samuel@sholland.org>
Cc:     Samuel Holland <samuel@sholland.org>,
        Daniel Vetter <daniel@ffwll.ch>,
        David Airlie <airlied@linux.ie>,
        Krzysztof Kozlowski <krzk+dt@kernel.org>,
        Rob Herring <robh+dt@kernel.org>, devicetree@vger.kernel.org,
        dri-devel@lists.freedesktop.org,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        linux-sunxi@lists.linux.dev
Subject: Re: [PATCH v3 13/14] drm/sun4i: Add support for D1 TCONs
Date:   Sun, 24 Apr 2022 22:08:13 +0200
Message-ID: <3164754.aeNJFYEL58@kista>
In-Reply-To: <20220424162633.12369-14-samuel@sholland.org>
References: <20220424162633.12369-1-samuel@sholland.org> <20220424162633.12369-14-samuel@sholland.org>
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Dne nedelja, 24. april 2022 ob 18:26:31 CEST je Samuel Holland napisal(a):
> D1 has a TCON TOP, so its quirks are similar to those for the R40 TCONs.
> While there are some register changes, the part of the TCON TV supported
> by the driver matches the R40 quirks, so that quirks structure can be
> reused. D1 has the first supported TCON LCD with a TCON TOP, so the TCON
> LCD needs a new quirks structure.
> 
> D1's TCON LCD hardware supports LVDS; in fact it provides dual-link LVDS
> from a single TCON. However, it comes with a brand new LVDS PHY. Since
> this PHY has not been tested, leave out LVDS driver support for now.
> 
> Signed-off-by: Samuel Holland <samuel@sholland.org>

Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>

Best regards,
Jernej Skrabec

> ---
> 
> (no changes since v1)
> 
>  drivers/gpu/drm/sun4i/sun4i_tcon.c | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.c b/drivers/gpu/drm/sun4i/
sun4i_tcon.c
> index 88db2d2a9336..2ee158aaeb9e 100644
> --- a/drivers/gpu/drm/sun4i/sun4i_tcon.c
> +++ b/drivers/gpu/drm/sun4i/sun4i_tcon.c
> @@ -1542,6 +1542,12 @@ static const struct sun4i_tcon_quirks 
sun9i_a80_tcon_tv_quirks = {
>  	.needs_edp_reset = true,
>  };
>  
> +static const struct sun4i_tcon_quirks sun20i_d1_lcd_quirks = {
> +	.has_channel_0		= true,
> +	.dclk_min_div		= 1,
> +	.set_mux		= sun8i_r40_tcon_tv_set_mux,
> +};
> +
>  /* sun4i_drv uses this list to check if a device node is a TCON */
>  const struct of_device_id sun4i_tcon_of_table[] = {
>  	{ .compatible = "allwinner,sun4i-a10-tcon", .data = 
&sun4i_a10_quirks },
> @@ -1559,6 +1565,8 @@ const struct of_device_id sun4i_tcon_of_table[] = {
>  	{ .compatible = "allwinner,sun8i-v3s-tcon", .data = 
&sun8i_v3s_quirks },
>  	{ .compatible = "allwinner,sun9i-a80-tcon-lcd", .data = 
&sun9i_a80_tcon_lcd_quirks },
>  	{ .compatible = "allwinner,sun9i-a80-tcon-tv", .data = 
&sun9i_a80_tcon_tv_quirks },
> +	{ .compatible = "allwinner,sun20i-d1-tcon-lcd", .data = 
&sun20i_d1_lcd_quirks },
> +	{ .compatible = "allwinner,sun20i-d1-tcon-tv", .data = 
&sun8i_r40_tv_quirks },
>  	{ }
>  };
>  MODULE_DEVICE_TABLE(of, sun4i_tcon_of_table);
> -- 
> 2.35.1
> 
>