linux-kernel - Re: [PATCH] arm64: dts: rockchip: add gmac needed clk for rk3399 pd

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Message-ID: <15590097.XDc0ARC38n@phil>
Date:   Mon, 14 Nov 2016 15:42:34 +0100
From:   Heiko Stuebner <heiko@...ech.de>
To:     Caesar Wang <wxt@...k-chips.com>
Cc:     dianders@...omium.org, linux-arm-kernel@...ts.infradead.org,
        zhangqing@...k-chips.com, linux-rockchip@...ts.infradead.org,
        linux-kernel@...r.kernel.org,
        Jeffy Chen <jeffy.chen@...k-chips.com>
Subject: Re: [PATCH] arm64: dts: rockchip: add gmac needed clk for rk3399 pd

Am Montag, 14. November 2016, 12:36:39 CET schrieb Caesar Wang:
> From: Jeffy Chen <jeffy.chen@...k-chips.com>
> 
> This patch fixes that sometimes hang at start-up time of the system.
> As the below log:
> ...
> [   11.136543] calling  pm_genpd_debug_init+0x0/0x60 @ 1
> [   11.141602] initcall pm_genpd_debug_init+0x0/0x60 returned 0 after 11
> usecs [   11.148558] calling  genpd_poweroff_unused+0x0/0x84 @ 1
> <hang>
> 
> In some cases, the rk3399 should turn off the gmac power domain to save
> power if some boards didn't register the gmac device node for rk3399.
> Then, rk3399 need to make sure the gmac's pclk enabled if we need
> operate the gmac power domain. (Due to the NOC had enabled always)
> 
> Signed-off-by: Jeffy Chen <jeffy.chen@...k-chips.com>
> Signed-off-by: Caesar Wang <wxt@...k-chips.com>

applied to my dts64 branch


Thanks
Heiko