From mboxrd@z Thu Jan 1 00:00:00 1970 From: t-kristo@ti.com (Tero Kristo) Date: Wed, 2 Jul 2014 17:23:30 +0300 Subject: [PATCH 1/8] CLK: ti: dra7: Initialize USB_DPLL In-Reply-To: <1394197751-28984-2-git-send-email-rogerq@ti.com> References: <1394197751-28984-1-git-send-email-rogerq@ti.com> <1394197751-28984-2-git-send-email-rogerq@ti.com> Message-ID: <53B415E2.9090203@ti.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 > CC: Tero Kristo > Signed-off-by: Roger Quadros > --- > drivers/clk/ti/clk-7xx.c | 11 +++++++++++ > 1 file changed, 11 insertions(+) Hi, Resurrecting this patch, as it seems the clock-parenting stuff via DT hasn't really moved that much forward. Thus, this patch has been now queued for 3.17, thanks. -Tero > > 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__); > + > return rc; > } >