| Message ID | 201108101921.58149.marc.dietrich@ap.physik.uni-giessen.de (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Marc Dietrich wrote at Wednesday, August 10, 2011 11:22 AM: > These clocks are required for usb operation. pll_p_out4 needs to be set > to 24 MHz. The other clocks default to "off" in order to save some energy. > > Signed-off-by: Marc Dietrich <marvin24@gmx.de> Acked-by: Stephen Warren <swarren@nvidia.com> Given the rest of the thread, this is fine for now. We can address any deficiencies in the bus clock and clk_m parenting when it's addressed globally for all boards later. > diff --git a/arch/arm/mach-tegra/board-paz00.c b/arch/arm/mach-tegra/board-paz00.c > index 45111f6..cde36dc 100644 > --- a/arch/arm/mach-tegra/board-paz00.c > +++ b/arch/arm/mach-tegra/board-paz00.c > @@ -145,6 +145,12 @@ static __initdata struct tegra_clk_init_table paz00_clk_init_table[] = { > /* name parent rate enabled */ > { "uarta", "pll_p", 216000000, true }, > { "uartd", "pll_p", 216000000, true }, > + > + { "pll_p_out4", "pll_p", 24000000, true }, > + { "usbd", "clk_m", 12000000, false }, > + { "usb2", "clk_m", 12000000, false }, > + { "usb3", "clk_m", 12000000, false }, > + > { NULL, NULL, 0, 0}, > }; > > -- > 1.7.4.1
On Wed, Aug 10, 2011 at 01:39:58PM -0700, Stephen Warren wrote: > Marc Dietrich wrote at Wednesday, August 10, 2011 11:22 AM: > > These clocks are required for usb operation. pll_p_out4 needs to be set > > to 24 MHz. The other clocks default to "off" in order to save some energy. > > > > Signed-off-by: Marc Dietrich <marvin24@gmx.de> > > Acked-by: Stephen Warren <swarren@nvidia.com> > > Given the rest of the thread, this is fine for now. We can address any > deficiencies in the bus clock and clk_m parenting when it's addressed > globally for all boards later. Agreed; I don't have good access to hardware while on vacation, so I won't be able to test and post the clock change patches until towards the end of next week. I've applied and pushed this patch out to boards-for-3.2 meanwhile. -Olof
diff --git a/arch/arm/mach-tegra/board-paz00.c b/arch/arm/mach-tegra/board-paz00.c index 45111f6..cde36dc 100644 --- a/arch/arm/mach-tegra/board-paz00.c +++ b/arch/arm/mach-tegra/board-paz00.c @@ -145,6 +145,12 @@ static __initdata struct tegra_clk_init_table paz00_clk_init_table[] = { /* name parent rate enabled */ { "uarta", "pll_p", 216000000, true }, { "uartd", "pll_p", 216000000, true }, + + { "pll_p_out4", "pll_p", 24000000, true }, + { "usbd", "clk_m", 12000000, false }, + { "usb2", "clk_m", 12000000, false }, + { "usb3", "clk_m", 12000000, false }, + { NULL, NULL, 0, 0}, };
These clocks are required for usb operation. pll_p_out4 needs to be set to 24 MHz. The other clocks default to "off" in order to save some energy. Signed-off-by: Marc Dietrich <marvin24@gmx.de>