On Tue, 2015-08-04 at 23:26 +0300, Ran Shalit wrote: > On Tue, Aug 4, 2015 at 9:54 PM, Scott Wood <scottw...@freescale.com> wrote: > > On Tue, 2015-08-04 at 18:29 +0300, Ran Shalit wrote: > > > Hello, > > > > > > I would please like to ask if describing flash nor used with GPMC, > > > whould be done as described in: > > > https://www.kernel.org/doc/Documentation/devicetree/bindings/mtd/gpmc-nor.txt > > > It is described in the above link as "TI's GPMC", so I'm not sure if > > > it is relevent for powerpc too. > > > > That binding is for TI GPMC. > > > > Are you saying you have some PPC chip that has a flash controller called > > GPMC? > > > > -Scott > > > > Hi Scott, > > Thanks, I've worked with TI's chips, so I now understand that I made > here some confusion... > It is GPCM , not GPMC, my mistake. > We already configured it in u-boot, but on doing read/write from > kernel it doesn not work. > It seems that for the linux to use the correct driver, we need to > define the nor in the device tree. > Is there any example how to define nor GPCM in device tree ? Is it > possible not to override the existing GPCM configuration ?
Pretty much all of the mpc8xxx/qoriq device trees have GPCM NOR defined. See Documentation/devicetree/bindings/powerpc/fsl/lbc.txt and examples such as arch/powerpc/boot/dts/p4080ds.dts (part of the lbc node is in arch/powerpc/boot/dts/fsl/p4080si-post.dtsi). Linux will not change the GPCM configuration. -Scott _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
