Messages in this thread | | | Date | Fri, 15 Mar 2013 10:38:58 +0530 | From | Sekhar Nori <> | Subject | Re: [PATCH 2/3] ARM: davinci: da850: Enable EHRPWM TBCLK from CFG_CHIP1 |
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On 3/15/2013 10:27 AM, Philip, Avinash wrote: > On Thu, Mar 14, 2013 at 18:31:52, Nori, Sekhar wrote: >> On 3/14/2013 4:07 PM, Philip Avinash wrote: >>> da850 platforms require TBCLK synchronization in CFG_CHIP1 register for >>> TBCLK enable in EHRPWM modules. Enabling of TBCLK is done only if EHRPWM >>> DT node status is set to "okay" DT blob. >>> Also adds macro definitions for DA8XX_EHRPWM_TBCLKSYNC and >>> DA8XX_CFGCHIP1_REG. >> >> So there is actually a TBCLK in DA850 - it's just not modeled as a clock >> similar to the way it is done on AM335x? If yes, then instead of adding >> a dummy clock node and doing the TBCLK enable as part of init, why not >> model TBCLK in clock tree even on DA850? > > > TBCLK enabling should done from platform specific way. In DA850 it is done at > CFGCHIP1 register. Unfortunately Davinci clock frame work will support only > clock nodes inside PLLC and PSC modules. Handling of CFGCHP1 require
That's true at the moment, but that can be fixed.
> modifications in clock frame work. > > Hence handling it as part of initialization.
I am curious as to how this clock is handled in am335x. I searched for tbclk in arch/arm/ of linux-next but could not find any references. Where should I be looking?
Thanks, Sekhar
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