Hello, On Tue, Aug 23, 2016 at 6:41 PM, Suman Anna <s-anna@xxxxxx> wrote: > On 08/19/2016 06:39 PM, Tony Lindgren wrote: >> * Adam Ford <aford173@xxxxxxxxx> [160818 12:20]: >>> >>> Does anyone have any suggestions on the best way to approach? >> >> In the long run we should have drivers/drm just manage these >> devices using PM runtime and then just load firmware for the >> sgx if available. Not sure what all needs to change for that >> to happen though.. > > Unfortunately, the omap_hwmod code alone can't deal with PRCM reset > lines, so you would still require the drivers to have to call some API > for managing the resets, or if it is one-time boot-time setup thing, can > do what was done for DRA7 PCIe (see commit 1c96bee4df19). I did look to omap35xx trm and it's stated thas for sgx reset is necessary to: The SGX subsystem has its own reset domain. Global reset of the SGX is performed by activating the SGX_RST signal in the SGX_RST domain. Software controls the release of SGX_RST using the PRCM.RM_RSTCTRL_SGX[0] SGX_RST bit. But I cannot find RSTCTRL_SGX register nor SGX_RST bit in whole trm. Am I missing something? I have compiled pvr driver (with few small tweaks) agains 4.9 kernel and also did look to Adam's patch [0] I would like to implement what you suggested (similar to commit: 1c96bee4df19). Thanks. > > regards > Suman BR, marek > >> >> Also please check what the n900 and pandora/pyra people have >> done to get sgx working, there may be something usaable there. >> >> Regards, >> >> Tony >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-omap" in >> the body of a message to majordomo@xxxxxxxxxxxxxxx >> More majordomo info at http://vger.kernel.org/majordomo-info.html >> > > -- > To unsubscribe from this list: send the line "unsubscribe linux-omap" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- as simple and primitive as possible ------------------------------------------------- Marek Belisko - OPEN-NANDRA Freelance Developer Ruska Nova Ves 219 | Presov, 08005 Slovak Republic Tel: +421 915 052 184 skype: marekwhite twitter: #opennandra web: http://open-nandra.com -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
