* Tero Kristo <t-kristo@xxxxxx> [140307 05:46]: > On 03/07/2014 03:09 PM, Roger Quadros wrote: > >USB_DPLL must be initialized and locked at boot so that > >USB modules can work. > > > >Also program USB_DLL_M2 output to half rate. > > > >CC: Mike Turquette <mturquette@xxxxxxxxxx> > >CC: Tero Kristo <t-kristo@xxxxxx> > >Signed-off-by: Roger Quadros <rogerq@xxxxxx> > >--- > > drivers/clk/ti/clk-7xx.c | 11 +++++++++++ > > 1 file changed, 11 insertions(+) > > > >diff --git a/drivers/clk/ti/clk-7xx.c b/drivers/clk/ti/clk-7xx.c > >index 9977653..f89f3c2 100644 > >--- a/drivers/clk/ti/clk-7xx.c > >+++ b/drivers/clk/ti/clk-7xx.c > >@@ -18,6 +18,7 @@ > > > > #define DRA7_DPLL_ABE_DEFFREQ 361267200 > > #define DRA7_DPLL_GMAC_DEFFREQ 1000000000 > >+#define DRA7_DPLL_USB_DEFFREQ 960000000 > > > > > > static struct ti_dt_clk dra7xx_clks[] = { > >@@ -328,5 +329,15 @@ int __init dra7xx_dt_clk_init(void) > > if (rc) > > pr_err("%s: failed to configure GMAC DPLL!\n", __func__); > > > >+ dpll_ck = clk_get_sys(NULL, "dpll_usb_ck"); > >+ rc = clk_set_rate(dpll_ck, DRA7_DPLL_USB_DEFFREQ); > >+ if (rc) > >+ pr_err("%s: failed to configure USB DPLL!\n", __func__); > >+ > >+ dpll_ck = clk_get_sys(NULL, "dpll_usb_m2_ck"); > >+ rc = clk_set_rate(dpll_ck, DRA7_DPLL_USB_DEFFREQ/2); > >+ if (rc) > >+ pr_err("%s: failed to set USB_DPLL M2 OUT\n", __func__); > >+ > > I would rather see this done using the default-rate mechanism provided here: > > https://www.mail-archive.com/linux-omap@xxxxxxxxxxxxxxx/msg101300.html > > However, this remains to be commented by Mike whether the patch is > okay or not. Yes let's wait for that and not add hacks for new features. Regards, Tony -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html