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Date: Tue, 14 Apr 2020 21:36:40 +0800 From: Shawn Guo <shawnguo@...nel.org> To: peng.fan@....com Cc: sboyd@...nel.org, s.hauer@...gutronix.de, kernel@...gutronix.de, festevam@...il.com, linux-imx@....com, aisheng.dong@....com, abel.vesa@....com, Anson.Huang@....com, linux-clk@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH V3] clk: imx7ulp: make it easy to change ARM core clk On Mon, Mar 16, 2020 at 04:32:33PM +0800, peng.fan@....com wrote: > From: Peng Fan <peng.fan@....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@....com> Applied, thanks.
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