[PATCH 1/3] drm/rockchip: lvds: add rk3568 support

Sverdlin, Alexander alexander.sverdlin at siemens.com
Fri Jan 20 01:31:43 PST 2023


Hello Sascha,

On Fri, 2023-01-20 at 10:16 +0100, Sascha Hauer wrote:
> > +       /* Enable LVDS mode */
> > +       return regmap_update_bits(lvds->grf, RK3568_GRF_VO_CON2,
> > +                                 RK3568_LVDS0_MODE_EN(1),
> > +                                 RK3568_LVDS0_MODE_EN(1));
> 
> Isn't this the same as:
> 
>         regmap_write(lvds->grf, RK3568_GRF_VO_CON2,
> RK3568_LVDS0_MODE_EN(1));
> 
> Unless I am missing something I find a plain regmap_write() easier to
> read.

the former is setting a bit in a RMW operation, the latter is a plain
write, isn't it?

-- 
Alexander Sverdlin
Siemens AG
www.siemens.com


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