On Fri, Jan 4, 2019 at 9:39 PM Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx> wrote: > > On Fri, Jan 04, 2019 at 09:22:46PM -0800, John Stultz wrote: > > On Fri, Jan 4, 2019 at 7:42 PM Manivannan Sadhasivam > > <manivannan.sadhasivam@xxxxxxxxxx> wrote: > > > On Fri, Jan 04, 2019 at 12:56:23PM -0800, John Stultz wrote: > > > > From: Youlin Wang <wwx575822@xxxxxxxxxxxxxxxxxxxx> > > > > > > > > There is an new "hisi-pcm-asp-dma-1.0" device added in > > > > "arch/arm64/boot/dts/hisilicon/hi3660.dtsi". > > > > So we have to add a matching id in the driver file: > > > > .compatible = "hisilicon,hisi-pcm-asp-dma-1.0" > > > > > > > > And also hisi-pcm-asp dma device needs no setting to the clock. > > > > So we skip this by adding and using soc data flags. > > > > > > > > After above this driver will support both k3 and hisi_asp dma hardware. > > > > > > > > > > Small description about the hardware (ASP DMAC) would be really helpful. > > > > I've taken a shot at this (along with integrating your other feedback > > - thanks again for the review!), though as I don't have direct > > documentation, my knowledge is a bit second hand. > > > > See here: > > https://git.linaro.org/people/john.stultz/android-dev.git/commit/?h=dev/hikey960-mainline-WIP&id=754a79facf1af0b59a7f8fd63050da12ebf5521e > > > > Let me know if you have suggestions for more specific changes! > > Description looks good to me. But looks like you are not protecting the > other clk APIs like clk_prepare_enable and clk_disable_unprepare. Don't > they fail when the relevant clk is not found? No, those calls just return 0 if null clock is passed int clk_prepare(struct clk *clk) { if (!clk) return 0; ... thanks -john
