From mboxrd@z Thu Jan 1 00:00:00 1970 From: Roger Quadros Subject: [PATCH 1/4] CLK: ti: dra7: Initialize USB_DPLL Date: Thu, 1 Aug 2013 17:58:51 +0300 Message-ID: <1375369134-26398-2-git-send-email-rogerq@ti.com> References: <1375369134-26398-1-git-send-email-rogerq@ti.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <1375369134-26398-1-git-send-email-rogerq@ti.com> Sender: linux-kernel-owner@vger.kernel.org To: tony@atomide.com, rnayak@ti.com Cc: benoit.cousson@linaro.org, balbi@ti.com, george.cherian@ti.com, kishon@ti.com, dmurphy@ti.com, t-kristo@ti.com, linux-omap@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Roger Quadros List-Id: linux-omap@vger.kernel.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. Signed-off-by: Roger Quadros --- drivers/clk/omap/clk-7xx.c | 11 +++++++++++ 1 files changed, 11 insertions(+), 0 deletions(-) diff --git a/drivers/clk/omap/clk-7xx.c b/drivers/clk/omap/clk-7xx.c index ddb39dd..f444513 100644 --- a/drivers/clk/omap/clk-7xx.c +++ b/drivers/clk/omap/clk-7xx.c @@ -19,6 +19,7 @@ #define DRA7_DPLL_ABE_DEFFREQ 361267200 #define DRA7_DPLL_GMAC_DEFFREQ 1000000000 +#define DRA7_DPLL_USB_DEFFREQ 960000000 static struct omap_dt_clk dra7xx_clks[] = { @@ -63,5 +64,15 @@ int __init dra7xx_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; } -- 1.7.4.1