From 1a2e8d8f278590289badc61aba8f059aacd3b240 Mon Sep 17 00:00:00 2001 From: Jonas Gorski Date: Sun, 19 Jan 2014 13:45:42 +0000 Subject: brcm63xx: prevent usb clock state inconsistency on BCM6318 Return the same clock for usbh and usbd on BCM6318 to prevent the clock getting disabled despite being supposed to be enabled, e.g. by the following sequence: clk_enable(usbh); <- usbh->usage = 1, enabled clk_enable(usbd); <- usbd->usage = 1, enabled (no effect) clk_disable(usbd); <- usbd->usage = 0, -> disabled! Signed-off-by: Jonas Gorski git-svn-id: svn://svn.openwrt.org/openwrt/trunk@39321 3c298f89-4303-0410-b956-a3cf2f4a3e73 --- .../346-MIPS-BCM63XX-USB-ENETSW-6318-clocks.patch | 64 ++++++++++++---------- 1 file changed, 35 insertions(+), 29 deletions(-) (limited to 'target/linux') diff --git a/target/linux/brcm63xx/patches-3.10/346-MIPS-BCM63XX-USB-ENETSW-6318-clocks.patch b/target/linux/brcm63xx/patches-3.10/346-MIPS-BCM63XX-USB-ENETSW-6318-clocks.patch index 8876f26cbe..2854006222 100644 --- a/target/linux/brcm63xx/patches-3.10/346-MIPS-BCM63XX-USB-ENETSW-6318-clocks.patch +++ b/target/linux/brcm63xx/patches-3.10/346-MIPS-BCM63XX-USB-ENETSW-6318-clocks.patch @@ -13,38 +13,44 @@ bcm_hwclock_set(CKCTL_6328_ROBOSW_EN, enable); else if (BCMCPU_IS_6362()) bcm_hwclock_set(CKCTL_6362_ROBOSW_EN, enable); -@@ -179,11 +183,22 @@ static struct clk clk_pcm = { - }; - - /* -+ * 6318 USB host & slave clock -+ */ -+static void bcm_6318_usb_clock_set(int enable) -+{ -+ bcm_hwclock_set(CKCTL_6318_USB_EN, enable); -+ bcm_ub_hwclock_set(UB_CKCTL_6318_USB_EN, enable); -+} -+ -+/* - * USB host clock +@@ -183,18 +187,22 @@ static struct clk clk_pcm = { */ static void usbh_set(struct clk *clk, int enable) { - if (BCMCPU_IS_6328()) -+ if (BCMCPU_IS_6318()) -+ bcm_6318_usb_clock_set(enable); -+ else if (BCMCPU_IS_6328()) ++ if (BCMCPU_IS_6318()) { ++ bcm_hwclock_set(CKCTL_6318_USB_EN, enable); ++ bcm_ub_hwclock_set(UB_CKCTL_6318_USB_EN, enable); ++ } else if (BCMCPU_IS_6328()) { bcm_hwclock_set(CKCTL_6328_USBH_EN, enable); - else if (BCMCPU_IS_6348()) +- else if (BCMCPU_IS_6348()) ++ } else if (BCMCPU_IS_6348()) { bcm_hwclock_set(CKCTL_6348_USBH_EN, enable); -@@ -209,7 +224,9 @@ static struct clk clk_usbh = { - */ - static void usbd_set(struct clk *clk, int enable) - { -- if (BCMCPU_IS_6328()) -+ if (BCMCPU_IS_6318()) -+ bcm_6318_usb_clock_set(enable); -+ else if (BCMCPU_IS_6328()) - bcm_hwclock_set(CKCTL_6328_USBD_EN, enable); - else if (BCMCPU_IS_6362()) - bcm_hwclock_set(CKCTL_6362_USBD_EN, enable); +- else if (BCMCPU_IS_6362()) ++ } else if (BCMCPU_IS_6362()) { + bcm_hwclock_set(CKCTL_6362_USBH_EN, enable); +- else if (BCMCPU_IS_6368()) ++ } else if (BCMCPU_IS_6368()) { + bcm_hwclock_set(CKCTL_6368_USBH_EN, enable); +- else if (BCMCPU_IS_63268()) ++ } else if (BCMCPU_IS_63268()) { + bcm_hwclock_set(CKCTL_63268_USBH_EN, enable); +- else ++ } else { + return; ++ } + + if (enable) + msleep(100); +@@ -393,9 +401,9 @@ struct clk *clk_get(struct device *dev, + return &clk_enetsw; + if (!strcmp(id, "ephy")) + return &clk_ephy; +- if (!strcmp(id, "usbh")) ++ if (!strcmp(id, "usbh") || (BCMCPU_IS_6318() && !strcmp(id, "usbd"))) + return &clk_usbh; +- if (!strcmp(id, "usbd")) ++ if (!strcmp(id, "usbd") && !BCMCPU_IS_6318()) + return &clk_usbd; + if (!strcmp(id, "spi")) + return &clk_spi; -- cgit v1.2.3