linux-kernel - Re: [PATCH v3] arm64: dts: rockchip: add the power domain node for rk3399

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Message-ID: <4362000.pLfftZqEvu@phil>
Date:	Wed, 06 Jul 2016 22:56:34 +0200
From:	Heiko Stuebner <heiko@...ech.de>
To:	Caesar Wang <wxt@...k-chips.com>
Cc:	dianders@...omium.org, linux-rockchip@...ts.infradead.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	devicetree@...r.kernel.org, huangtao@...k-chips.com,
	eddie.cai@...k-chips.com, Elaine Zhang <zhangqing@...k-chips.com>
Subject: Re: [PATCH v3] arm64: dts: rockchip: add the power domain node for rk3399

Am Montag, 4. Juli 2016, 20:34:04 schrieb Caesar Wang:
> From: Elaine Zhang <zhangqing@...k-chips.com>
> 
> In order to meet low power requirements, a power management unit (PMU) is
> designed for controlling power resources in RK3399. The RK3399 PMU is
> dedicated for managing the power of the whole chip.
> 
> 1. add pd node for RK3399 Soc
> 2. create power domain tree
> 3. add qos node for domain
> 
> From the DT/binds and driver can get more detail information:
> The driver:
>         drivers/soc/rockchip/pm_domains.c
> The document:
>         Documentation/devicetree/bindings/soc/rockchip/power_domain.txt
> 
> Note:
> As the TRM lists many voltage domains and power domains, then this patch
> adds some domains for driver. Due to some domains
> (e.g. emmc, usb, core)...We can't turned off it on
> bootup, or says some device driver can't handle the power domain enough.
> Maybe We will add more other domains in the future or later.
> 
> Signed-off-by: Elaine Zhang <zhangqing@...k-chips.com>
> Signed-off-by: Caesar Wang <wxt@...k-chips.com>
> Cc: linux-arm-kernel@...ts.infradead.org
> Cc: linux-rockchip@...ts.infradead.org
> Cc: Heiko Stuebner <heiko@...ech.de>

applied to my dts64 branch after renaming the qos nodes, removing the status
property and moving the rga domain up a bit. Please double check:
https://git.kernel.org/cgit/linux/kernel/git/mmind/linux-rockchip.git/commit/?id=6d3cdbf1c219f9817290903e9d1e8de7462a7b54