Nishanth Menon <nm@xxxxxx> writes: > OMP3630 silicon can enable higher frequencies only depending on the board > characteristics meeting the recommended standards, and has to be selectively > toggled. > > Beagle XM uses 3730 variant and the board design allows enabling 800MHz and > 1GHz OPPs. However, We need Smart reflex class 1.5 and ABB to enable 1GHz > safely. For the moment, we tweak the default table to allow for 800Mhz OPP > usage. > > Reported-by: Koen Kooi <koen@xxxxxxxxxxxxxxx> > Tested-by: Koen Kooi <koen@xxxxxxxxxxxxxxx> > > Signed-off-by: Nishanth Menon <nm@xxxxxx> Thanks, queuing for 2.6.39 (branch: for_2.6.39/pm-misc) Kevin > --- > v2: fixed issue when !mh || !dh, updated commit message to point on rationale > for board specific tweaking > v1: http://marc.info/?t=129426060900008&r=1&w=2 > arch/arm/mach-omap2/board-omap3beagle.c | 50 +++++++++++++++++++++++++++++++ > 1 files changed, 50 insertions(+), 0 deletions(-) > > diff --git a/arch/arm/mach-omap2/board-omap3beagle.c b/arch/arm/mach-omap2/board-omap3beagle.c > index 6c12760..7dc0397 100644 > --- a/arch/arm/mach-omap2/board-omap3beagle.c > +++ b/arch/arm/mach-omap2/board-omap3beagle.c > @@ -23,6 +23,7 @@ > #include <linux/gpio.h> > #include <linux/input.h> > #include <linux/gpio_keys.h> > +#include <linux/opp.h> > > #include <linux/mtd/mtd.h> > #include <linux/mtd/partitions.h> > @@ -44,10 +45,12 @@ > #include <plat/gpmc.h> > #include <plat/nand.h> > #include <plat/usb.h> > +#include <plat/omap_device.h> > > #include "mux.h" > #include "hsmmc.h" > #include "timer-gp.h" > +#include "pm.h" > > #define NAND_BLOCK_SIZE SZ_128K > > @@ -556,6 +559,52 @@ static struct omap_musb_board_data musb_board_data = { > .power = 100, > }; > > +static void __init beagle_opp_init(void) > +{ > + int r = 0; > + > + /* Initialize the omap3 opp table */ > + if (omap3_opp_init()) { > + pr_err("%s: opp default init failed\n", __func__); > + return; > + } > + > + /* Custom OPP enabled for XM */ > + if (omap3_beagle_get_rev() == OMAP3BEAGLE_BOARD_XM) { > + struct omap_hwmod *mh = omap_hwmod_lookup("mpu"); > + struct omap_hwmod *dh = omap_hwmod_lookup("iva"); > + struct device *dev; > + > + if (!mh || !dh) { > + pr_err("%s: Aiee.. no mpu/dsp devices? %p %p\n", > + __func__, mh, dh); > + return; > + } > + /* Enable MPU 1GHz and lower opps */ > + dev = &mh->od->pdev.dev; > + r = opp_enable(dev, 800000000); > + /* TODO: MPU 1GHz needs SR and ABB */ > + > + /* Enable IVA 800MHz and lower opps */ > + dev = &dh->od->pdev.dev; > + r |= opp_enable(dev, 660000000); > + /* TODO: DSP 800MHz needs SR and ABB */ > + if (r) { > + pr_err("%s: failed to enable higher opp %d\n", > + __func__, r); > + /* > + * Cleanup - disable the higher freqs - we dont care > + * about the results > + */ > + dev = &mh->od->pdev.dev; > + opp_disable(dev, 800000000); > + dev = &dh->od->pdev.dev; > + opp_disable(dev, 660000000); > + } > + } > + return; > +} > + > static void __init omap3_beagle_init(void) > { > omap3_mux_init(board_mux, OMAP_PACKAGE_CBB); > @@ -579,6 +628,7 @@ static void __init omap3_beagle_init(void) > omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT); > > beagle_display_init(); > + beagle_opp_init(); > } > > MACHINE_START(OMAP3_BEAGLE, "OMAP3 Beagle Board") -- 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
