linux-kernel - Re: [PATCH] ARM: dts: rockchip: add missing grf phandle for rk3288

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Message-ID: <802d9787-92dd-ee9d-51a2-45e42a9ba430@soulik.info>
Date:   Sun, 14 May 2017 23:10:48 +0800
From:   ayaka <ayaka@...lik.info>
To:     Heiko Stuebner <heiko@...ech.de>
Cc:     devicetree@...r.kernel.org, robh+dt@...nel.org,
        mark.rutland@....com, linux@...linux.org.uk,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ARM: dts: rockchip: add missing grf phandle for rk3288



On 05/14/2017 10:59 PM, Heiko Stuebner wrote:
> Hi Randy,
>
> Am Sonntag, 7. Mai 2017, 22:34:46 CEST schrieb Randy Li:
>> The PWM devices need to access the grf to switch the PWM IP.
> The grf property is not part of the pwm binding and I remember
> this coming up in veyron times, when Thiery didn't want such settings
> in the pwm driver. So the kernel pwm driver does not switch anything
> right now.
OK, I see, I will contact the u-boot, submit a patch there.
>
>
>> And tsadc uses it to shutdown the system.
> No it doesn't. The tsadc on rk3288 does not do any grf settings right now,
> as it is using the v2_initialize function. Only rk3366 and rk3399 seem
> to do any grf settings in the current v4.12-rc1 . Or is there some tsadc
> patch from you pending to change that?
Not yet, there is a register CRU_GLB_RST_ST at rk3288 cru. I think I 
need to submit a patch for it.
>
>
> Heiko