linux-kernel - Re: [Patch v3 03/10] ARM: OMAP: DRA7xx: Make CAM clock domain SWSUP only

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Message-ID: <20191112153104.GG5610@atomide.com>
Date:   Tue, 12 Nov 2019 07:31:04 -0800
From:   Tony Lindgren <tony@...mide.com>
To:     Benoit Parrot <bparrot@...com>
Cc:     Tero Kristo <t-kristo@...com>, linux-omap@...r.kernel.org,
        linux-clk@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [Patch v3 03/10] ARM: OMAP: DRA7xx: Make CAM clock domain SWSUP
 only

* Benoit Parrot <bparrot@...com> [191112 14:25]:
> Both CAL and VIP rely on this clock domain. But CAL DPHY require
> LVDSRX_96M_GFCLK to be active. When this domain is set to HWSUP the
> LVDSRX_96M_GFCLK is on;y active when VIP1 clock is also active.  If only
> CAL on DRA72x (which uses the VIP2 clkctrl) probes the CAM domain is
> enabled but the LVDSRX_96M_GFCLK is left gated. Since LVDSRX_96M_GFCLK
> is sourcing the input clock to the DPHY then actual frame capture cannot
> start as the phy are inactive.
> 
> So we either have to also enabled VIP1 even if we don't intend on using
> it or we need to set the CAM domain to use SWSUP only.
> 
> This patch implements the latter.

Best that Tero picks up this one too if OK:

Acked-by: Tony Lindgren <tony@...mide.com>