Sanjeev Premi <premi@xxxxxx> writes: > This patch adds support for speed enhanced variant of OMAP35x > processors. These parts allow ARM and IVA running at 720MHz > and 520MHz respectively. > > These parts can be detected at runtime by reading contents of > PRODID.SKUID[3:0] at 0x4830A20C [1]. > > This patch specifically does following: > * Add new OPP to omap34xx_opp_def_list[] - disabled by default. > * Detect devices capable of running at new OPP. > * Enable new OPP only if device supports it. > * Check for presence of IVA before attempting to enable the > corresponding OPP. > > [1] http://focus.ti.com/lit/ug/spruff1d/spruff1d.pdf > > It appears from discussions (on this patch) that a variant of > OMAP3430 supports this OPP but lacks runtime detection. This > OPP can be enabled for these device by either: > 1) Setting the bit corresponding to OMAP3_HAS_720MHZ > in 'omap3_features'. (Refer changes to id.c) > 2) Removing check for omap3_has_720mhz() before enabling > the OPP. (Refer changes to opp3xxx_data.c) > 3) Calling opp_enable() for 720MHz/VDD1 and 520MHz/VDD2 in > the board file. (Refer changes to opp3xxx_data.c). > This should, ideally, be done before omap3_opp_init() is > called during device_initcall(). > > CAUTION: This should be done for identified parts only. > Else, the device could be damaged permanently. > > Signed-off-by: Sanjeev Premi <premi@xxxxxx> > Reviewed-by: G, Manjunath Kondaiah <manjugk@xxxxxx> Acked-by: Kevin Hilman <khilman@xxxxxx> -- 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
