Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
Date:   Tue, 14 Apr 2020 21:36:40 +0800
From:   Shawn Guo <shawnguo@kernel.org>
To:     peng.fan@nxp.com
Cc:     sboyd@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de,
        festevam@gmail.com, linux-imx@nxp.com, aisheng.dong@nxp.com,
        abel.vesa@nxp.com, Anson.Huang@nxp.com, linux-clk@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH V3] clk: imx7ulp: make it easy to change ARM core clk
Message-ID: <20200414133639.GC30676@dragon>
References: <1584347553-2654-1-git-send-email-peng.fan@nxp.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <1584347553-2654-1-git-send-email-peng.fan@nxp.com>
User-Agent: Mutt/1.9.4 (2018-02-28)
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

On Mon, Mar 16, 2020 at 04:32:33PM +0800, peng.fan@nxp.com wrote:
> From: Peng Fan <peng.fan@nxp.com>
> 
> ARM clk could only source from divcore or hsrun_divcore.
> 
> Follow what we already used on i.MX7D and i.MX8M SoCs, use
> imx_clk_hw_cpu API. When ARM core is running normaly,
> whether divcore or hwrun_divcore will finally source
> from SPLL_PFD0. However SPLL_PFD0 is marked with CLK_SET_GATE,
> so we need to disable SPLL_PFD0, when configure the rate.
> So add CORE and HSRUN_CORE virtual clk to make it easy to
> configure the clk using imx_clk_hw_cpu API.
> 
> Since CORE and HSRUN_CORE already marked with CLK_IS_CRITICAL, no
> need to set ARM as CLK_IS_CRITICAL. And when set the rate of ARM clk,
> prograting it the parent with CLK_SET_RATE_PARENT will finally set
> the SPLL_PFD0 clk.
> 
> Signed-off-by: Peng Fan <peng.fan@nxp.com>

Applied, thanks.