| Message ID | CAO8h3eFq9WhvZYbbeFfWgVEXViR8MAcGaztsvvaLpFSW-W6CfA@mail.gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Hi Matthias, On Thu, Jul 4, 2013 at 12:03 PM, Matthias Weißer <m.weisser.m@gmail.com> wrote: > Hi > > I am currently try to get Linux running on a custom imx25 hardware > using device tree. So far I am quite successfull and have the system > up using current mainline kernel and a NFS root file system. Now I > would like to have the framebuffer driver to get something on the LCD. > > My dts file looks like this: These mx27 examples can help you to implement the support for mx25: https://git.linaro.org/gitweb?p=people/shawnguo/linux-2.6.git;a=commitdiff;h=dcd23b848ed2e35f968a10984e255527b4dde3d5;hp=807f38ec8aae50626d5b4705a0a0f5c585275867 https://git.linaro.org/gitweb?p=people/shawnguo/linux-2.6.git;a=blob;f=arch/arm/boot/dts/imx27-phytec-phycard-s-rdk.dts;h=390d8f2f84d120bace022322c6319d82cf7e5a47;hb=refs/heads/for-next Regards, Fabio Estevam
On 07/04/2013 05:16 PM, Fabio Estevam wrote: > Hi Matthias, > > On Thu, Jul 4, 2013 at 12:03 PM, Matthias Weißer <m.weisser.m@gmail.com> wrote: >> Hi >> >> I am currently try to get Linux running on a custom imx25 hardware >> using device tree. So far I am quite successfull and have the system >> up using current mainline kernel and a NFS root file system. Now I >> would like to have the framebuffer driver to get something on the LCD. >> >> My dts file looks like this: > > These mx27 examples can help you to implement the support for mx25: > > https://git.linaro.org/gitweb?p=people/shawnguo/linux-2.6.git;a=commitdiff;h=dcd23b848ed2e35f968a10984e255527b4dde3d5;hp=807f38ec8aae50626d5b4705a0a0f5c585275867 > > https://git.linaro.org/gitweb?p=people/shawnguo/linux-2.6.git;a=blob;f=arch/arm/boot/dts/imx27-phytec-phycard-s-rdk.dts;h=390d8f2f84d120bace022322c6319d82cf7e5a47;hb=refs/heads/for-next > The links above are valid as skeleton for a imx28 based board? Best regards,
On Thu, Jul 4, 2013 at 12:41 PM, gianluca
<gianlucarenzi@eurekelettronica.it> wrote:
> The links above are valid as skeleton for a imx28 based board?
No, these examples are for mx27. mx25 and mx27 share the same video controller.
For a mx28 example, you can refer to imx28-evk.dts.
Hi Fabio 2013/7/5 Fabio Estevam <festevam@gmail.com>: > Hi Matthias, > > On Fri, Jul 5, 2013 at 4:37 AM, Matthias Weißer <m.weisser.m@gmail.com> wrote: > >> Thanks for the links. That made some things clearer for me. But I am >> still a bit confused about the driver (imxfb.c) itself. From what I >> can see it is not dt aware as there is no of_device_id structure with >> the compatible entries. I think I have to add dt support to the >> framebuffer driver. Am I right? > > Yes, you need to apply this one: > http://marc.info/?l=linux-fbdev&m=136956466617736&w=2 OK. Done that and it works like a charm. Thanks a lot. > I thought it has already been applied, but it has not reached mainline yet. > > Regards, > > Fabio Estevam Regards Matthias
Hi Matthias, On Mon, Jul 8, 2013 at 3:31 AM, Matthias Weißer <m.weisser.m@gmail.com> wrote: > Hi Fabio > > 2013/7/5 Fabio Estevam <festevam@gmail.com>: >> Hi Matthias, >> >> On Fri, Jul 5, 2013 at 4:37 AM, Matthias Weißer <m.weisser.m@gmail.com> wrote: >> >>> Thanks for the links. That made some things clearer for me. But I am >>> still a bit confused about the driver (imxfb.c) itself. From what I >>> can see it is not dt aware as there is no of_device_id structure with >>> the compatible entries. I think I have to add dt support to the >>> framebuffer driver. Am I right? >> >> Yes, you need to apply this one: >> http://marc.info/?l=linux-fbdev&m=136956466617736&w=2 > > OK. Done that and it works like a charm. Thanks a lot. Great, care to submit patches for adding mx25 fb support?
Hi Fabio 2013/7/10 Fabio Estevam <festevam@gmail.com>: > Hi Matthias, > > On Mon, Jul 8, 2013 at 3:31 AM, Matthias Weißer <m.weisser.m@gmail.com> wrote: >> Hi Fabio >> >> 2013/7/5 Fabio Estevam <festevam@gmail.com>: >>> Hi Matthias, >>> >>> On Fri, Jul 5, 2013 at 4:37 AM, Matthias Weißer <m.weisser.m@gmail.com> wrote: >>> >>>> Thanks for the links. That made some things clearer for me. But I am >>>> still a bit confused about the driver (imxfb.c) itself. From what I >>>> can see it is not dt aware as there is no of_device_id structure with >>>> the compatible entries. I think I have to add dt support to the >>>> framebuffer driver. Am I right? >>> >>> Yes, you need to apply this one: >>> http://marc.info/?l=linux-fbdev&m=136956466617736&w=2 >> >> OK. Done that and it works like a charm. Thanks a lot. > > Great, care to submit patches for adding mx25 fb support? I can. But I think the only thing is the slightly changed arch/arm/boot/dts/imx25.dtsi. Patch to this mailing list? Patch against mainline kernel is OK? Regards Matthias
On Thu, Jul 11, 2013 at 3:28 AM, Matthias Weißer <m.weisser.m@gmail.com> wrote: >> Great, care to submit patches for adding mx25 fb support? > > I can. But I think the only thing is the slightly changed > arch/arm/boot/dts/imx25.dtsi. Patch to this mailing list? Patch > against mainline kernel is OK? Yes, you should generate the patch against Shawn's for-next branch: http://git.linaro.org/gitweb?p=people/shawnguo/linux-2.6.git;a=shortlog;h=refs/heads/for-next Then send the patch to him with the linux-arm-kernel list on Cc. Regards, Fabio Estevam
--- a/arch/arm/boot/dts/imx25.dtsi +++ b/arch/arm/boot/dts/imx25.dtsi @@ -378,6 +378,7 @@ }; lcdc@53fbc000 { + compatible = "fsl,imx27-fb", "fsl,imx21-fb"; reg = <0x53fbc000 0x4000>; interrupts = <39>; clocks = <&clks 103>, <&clks 66>, <&clks 49>;
Hi I am currently try to get Linux running on a custom imx25 hardware using device tree. So far I am quite successfull and have the system up using current mainline kernel and a NFS root file system. Now I would like to have the framebuffer driver to get something on the LCD. My dts file looks like this: /dts-v1/; #include "imx25.dtsi" / { model = "Graf-Syteco zmx25"; compatible = "graf,imx25-zmx25", "fsl,imx25"; memory { reg = <0x80000000 0x4000000>; }; soc { aips@53f00000 { /* AIPS2 */ lcdc@53fbc000 { status = "okay"; }; }; }; }; &uart1 { status = "okay"; }; &uart2 { status = "okay"; }; &fec { phy-mode = "rmii"; status = "okay"; }; I also added the compatibility entry in the imx25.dtsi But still I didn't get /dev/fb so I think I am doing something wrong. Any hints for docs I can study on how to do the right things? Regards Matthias