From mboxrd@z Thu Jan 1 00:00:00 1970 From: rogerq@ti.com (Roger Quadros) Date: Fri, 7 Mar 2014 15:09:04 +0200 Subject: [PATCH 1/8] CLK: ti: dra7: Initialize USB_DPLL In-Reply-To: <1394197751-28984-1-git-send-email-rogerq@ti.com> References: <1394197751-28984-1-git-send-email-rogerq@ti.com> Message-ID: <1394197751-28984-2-git-send-email-rogerq@ti.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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(+) 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; } -- 1.8.3.2