brcm63xx: add linux 4.4 support

[openwrt.git] / target / linux / brcm63xx / patches-4.4 / 348-MIPS-BCM63XX-fix-BCM63268-USB-clock.patch

diff --git a/target/linux/brcm63xx/patches-4.4/348-MIPS-BCM63XX-fix-BCM63268-USB-clock.patch b/target/linux/brcm63xx/patches-4.4/348-MIPS-BCM63XX-fix-BCM63268-USB-clock.patch
new file mode 100644 (file)
index 0000000..10edbc4
--- /dev/null
+++ b/target/linux/brcm63xx/patches-4.4/348-MIPS-BCM63XX-fix-BCM63268-USB-clock.patch
@@ -0,0 +1,71 @@
+--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h
++++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h
+@@ -586,6 +586,9 @@
+ #define TIMER_CTL_MONOTONIC_MASK      (1 << 30)
+ #define TIMER_CTL_ENABLE_MASK         (1 << 31)
+ 
++/* Clock reset control (63268 only) */
++#define TIMER_CLK_RST_CTL_REG         0x2c
++#define CLK_RST_CTL_USB_REF_CLK_EN    (1 << 18)
+ 
+ /*************************************************************************
+  * _REG relative to RSET_WDT
+@@ -1533,6 +1536,11 @@
+ #define STRAPBUS_63268_FCVO_SHIFT     21
+ #define STRAPBUS_63268_FCVO_MASK      (0xf << STRAPBUS_63268_FCVO_SHIFT)
+ 
++#define MISC_IDDQ_CTRL_6328_REG               0x48
++#define MISC_IDDQ_CTRL_63268_REG      0x4c
++
++#define IDDQ_CTRL_63268_USBH          (1 << 4)
++
+ #define MISC_STRAPBUS_6328_REG                0x240
+ #define STRAPBUS_6328_FCVO_SHIFT      7
+ #define STRAPBUS_6328_FCVO_MASK               (0x1f << STRAPBUS_6328_FCVO_SHIFT)
+--- a/arch/mips/bcm63xx/clk.c
++++ b/arch/mips/bcm63xx/clk.c
+@@ -62,6 +62,26 @@ static void bcm_ub_hwclock_set(u32 mask,
+       bcm_perf_writel(reg, PERF_UB_CKCTL_REG);
+ }
+ 
++static void bcm_misc_iddq_set(u32 mask, int enable)
++{
++      u32 offset;
++      u32 reg;
++
++      if (BCMCPU_IS_6328() || BCMCPU_IS_6362())
++              offset = MISC_IDDQ_CTRL_6328_REG;
++      else if (BCMCPU_IS_63268())
++              offset = MISC_IDDQ_CTRL_63268_REG;
++      else
++              return;
++
++      reg = bcm_misc_readl(offset);
++      if (enable)
++              reg &= ~mask;
++      else
++              reg |= mask;
++      bcm_misc_writel(reg, offset);
++}
++
+ /*
+  * Ethernet MAC "misc" clock: dma clocks and main clock on 6348
+  */
+@@ -199,7 +219,17 @@ static void usbh_set(struct clk *clk, in
+       } else if (BCMCPU_IS_6368()) {
+               bcm_hwclock_set(CKCTL_6368_USBH_EN, enable);
+       } else if (BCMCPU_IS_63268()) {
++              u32 reg;
++
+               bcm_hwclock_set(CKCTL_63268_USBH_EN, enable);
++              bcm_misc_iddq_set(IDDQ_CTRL_63268_USBH, enable);
++              bcm63xx_core_set_reset(BCM63XX_RESET_USBH, !enable);
++              reg = bcm_timer_readl(TIMER_CLK_RST_CTL_REG);
++              if (enable)
++                      reg |= CLK_RST_CTL_USB_REF_CLK_EN;
++              else
++                      reg &= ~CLK_RST_CTL_USB_REF_CLK_EN;
++              bcm_timer_writel(reg, TIMER_CLK_RST_CTL_REG);
+       } else {
+               return;
+       }