| Message ID | 20170817140424.4614-1-gary.bisson@boundarydevices.com |
|---|---|
| State | New |
| Headers | show |
Hi Gary, On Thu, Aug 17, 2017 at 11:04 AM, Gary Bisson <gary.bisson@boundarydevices.com> wrote: > Allows to load firmware files which aren't built inside the kernel. > > Especially useful for CODA firmware (vpu_fw_imx6q.bin) which is usually > located in the rootfs. > > Signed-off-by: Gary Bisson <gary.bisson@boundarydevices.com> > --- > Hi Shawn, > > I'm not sure if this patch is acceptable since I've noticed that no > configuration currently has that option enabled (why?). > > As mentioned in the commit, I had to enable that in order to have CODA > load the VPU firmware properly. > > Another option would be to make the CODA driver a module... Yes, that's what we have currently: commit a5a56f07c2726cc801efccd23f8df29af04d6d19 Author: Fabio Estevam <fabio.estevam@nxp.com> Date: Fri Jul 7 12:06:45 2017 -0300 ARM: imx_v6_v7_defconfig: Select the coda driver as module The coda driver may be probed prior to the rootfs being available, leading to firmware loading failure. To avoid such problem, select the coda driver as module. Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Hi Fabio, On Thu, Aug 17, 2017 at 5:11 PM, Fabio Estevam <festevam@gmail.com> wrote: > Hi Gary, > > On Thu, Aug 17, 2017 at 11:04 AM, Gary Bisson > <gary.bisson@boundarydevices.com> wrote: >> Allows to load firmware files which aren't built inside the kernel. >> >> Especially useful for CODA firmware (vpu_fw_imx6q.bin) which is usually >> located in the rootfs. >> >> Signed-off-by: Gary Bisson <gary.bisson@boundarydevices.com> >> --- >> Hi Shawn, >> >> I'm not sure if this patch is acceptable since I've noticed that no >> configuration currently has that option enabled (why?). >> >> As mentioned in the commit, I had to enable that in order to have CODA >> load the VPU firmware properly. >> >> Another option would be to make the CODA driver a module... > > Yes, that's what we have currently: > > commit a5a56f07c2726cc801efccd23f8df29af04d6d19 > Author: Fabio Estevam <fabio.estevam@nxp.com> > Date: Fri Jul 7 12:06:45 2017 -0300 > > ARM: imx_v6_v7_defconfig: Select the coda driver as module Ok good, I tested on v4.13-rc5, that's why I had the problem. I'll make sure to check Shawn's tree next time. Regards, Gary
Hi Shawn, On Thu, 2017-08-17 at 22:12 +0800, Shawn Guo wrote: > On Thu, Aug 17, 2017 at 04:04:24PM +0200, Gary Bisson wrote: > > Allows to load firmware files which aren't built inside the kernel. > > > > Especially useful for CODA firmware (vpu_fw_imx6q.bin) which is > > usually > > located in the rootfs. > > > > Signed-off-by: Gary Bisson <gary.bisson@boundarydevices.com> > > --- > > Hi Shawn, > > > > I'm not sure if this patch is acceptable since I've noticed that no > > configuration currently has that option enabled (why?). > > > > As mentioned in the commit, I had to enable that in order to have > > CODA > > load the VPU firmware properly. > > > > Another option would be to make the CODA driver a module... > > > > Let me know your thoughts. > > @Philipp, do you have any comments on this? > > From reading of the option help text, I feel the option is not > recommended? > > config FW_LOADER_USER_HELPER_FALLBACK > > This option enables / disables the invocation of user-helper > (e.g. udev) for loading firmware files as a fallback after the > direct file loading in kernel fails. The user-mode helper is > no longer required unless you have a special firmware file that > resides in a non-standard path. Moreover, the udev support has > been deprecated upstream. > > Shawn Building coda as a module should work fine, so I'd say this is not necessary. regards Philipp
diff --git a/arch/arm/configs/imx_v6_v7_defconfig b/arch/arm/configs/imx_v6_v7_defconfig index e74de69caeab..6f571d8b5a7e 100644 --- a/arch/arm/configs/imx_v6_v7_defconfig +++ b/arch/arm/configs/imx_v6_v7_defconfig @@ -89,6 +89,7 @@ CONFIG_RFKILL_INPUT=y CONFIG_DEVTMPFS=y CONFIG_DEVTMPFS_MOUNT=y # CONFIG_STANDALONE is not set +CONFIG_FW_LOADER_USER_HELPER_FALLBACK=y CONFIG_DMA_CMA=y CONFIG_CMA_SIZE_MBYTES=64 CONFIG_IMX_WEIM=y
Allows to load firmware files which aren't built inside the kernel. Especially useful for CODA firmware (vpu_fw_imx6q.bin) which is usually located in the rootfs. Signed-off-by: Gary Bisson <gary.bisson@boundarydevices.com> --- Hi Shawn, I'm not sure if this patch is acceptable since I've noticed that no configuration currently has that option enabled (why?). As mentioned in the commit, I had to enable that in order to have CODA load the VPU firmware properly. Another option would be to make the CODA driver a module... Let me know your thoughts. Regards, Gary --- arch/arm/configs/imx_v6_v7_defconfig | 1 + 1 file changed, 1 insertion(+)