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authorMasahiro Yamada <yamada.m@jp.panasonic.com>2015-02-27 02:26:58 +0900
committerMasahiro Yamada <yamada.m@jp.panasonic.com>2015-03-01 00:02:55 +0900
commit1535163a4e2dbc9c4a9b5c4b05cb8987f526885f (patch)
treed6019ee377e58b50fb56789ce1b073295ada1788
parentbdcf5a4c14200abf4e693c9b5c60ea495a2d1cef (diff)
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ARM: UniPhier: enable xHCI and GIO cores for PH1-Pro4
This is necessary to use the USB 3.0 host controllers on PH1-Pro4. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
-rw-r--r--arch/arm/mach-uniphier/include/mach/sc-regs.h11
-rw-r--r--arch/arm/mach-uniphier/ph1-pro4/clkrst_init.c15
2 files changed, 25 insertions, 1 deletions
diff --git a/arch/arm/mach-uniphier/include/mach/sc-regs.h b/arch/arm/mach-uniphier/include/mach/sc-regs.h
index f0467bb..caec6c2 100644
--- a/arch/arm/mach-uniphier/include/mach/sc-regs.h
+++ b/arch/arm/mach-uniphier/include/mach/sc-regs.h
@@ -1,7 +1,7 @@
/*
* UniPhier SC (System Control) block registers
*
- * Copyright (C) 2011-2014 Panasonic Corporation
+ * Copyright (C) 2011-2015 Panasonic Corporation
*
* SPDX-License-Identifier: GPL-2.0+
*/
@@ -38,19 +38,28 @@
#define SC_VPLL27BCTRL3 (SC_BASE_ADDR | 0x1298)
#define SC_RSTCTRL (SC_BASE_ADDR | 0x2000)
+#define SC_RSTCTRL_NRST_USB3B0 (0x1 << 17) /* USB3 #0 bus */
+#define SC_RSTCTRL_NRST_USB3C0 (0x1 << 16) /* USB3 #0 core */
#define SC_RSTCTRL_NRST_ETHER (0x1 << 12)
#define SC_RSTCTRL_NRST_STDMAC (0x1 << 10)
+#define SC_RSTCTRL_NRST_GIO (0x1 << 6)
#define SC_RSTCTRL_NRST_UMC1 (0x1 << 5)
#define SC_RSTCTRL_NRST_UMC0 (0x1 << 4)
#define SC_RSTCTRL_NRST_NAND (0x1 << 2)
#define SC_RSTCTRL2 (SC_BASE_ADDR | 0x2004)
+#define SC_RSTCTRL2_NRST_USB3B1 (0x1 << 17) /* USB3 #1 bus */
+#define SC_RSTCTRL2_NRST_USB3C1 (0x1 << 16) /* USB3 #1 core */
+
#define SC_RSTCTRL3 (SC_BASE_ADDR | 0x2008)
#define SC_CLKCTRL (SC_BASE_ADDR | 0x2104)
+#define SC_CLKCTRL_CEN_USB31 (0x1 << 17) /* USB3 #1 */
+#define SC_CLKCTRL_CEN_USB30 (0x1 << 16) /* USB3 #0 */
#define SC_CLKCTRL_CEN_ETHER (0x1 << 12)
#define SC_CLKCTRL_CEN_MIO (0x1 << 11)
#define SC_CLKCTRL_CEN_STDMAC (0x1 << 10)
+#define SC_CLKCTRL_CEN_GIO (0x1 << 6)
#define SC_CLKCTRL_CEN_UMC (0x1 << 4)
#define SC_CLKCTRL_CEN_NAND (0x1 << 2)
#define SC_CLKCTRL_CEN_SBC (0x1 << 1)
diff --git a/arch/arm/mach-uniphier/ph1-pro4/clkrst_init.c b/arch/arm/mach-uniphier/ph1-pro4/clkrst_init.c
index 4ac5411..054efa6 100644
--- a/arch/arm/mach-uniphier/ph1-pro4/clkrst_init.c
+++ b/arch/arm/mach-uniphier/ph1-pro4/clkrst_init.c
@@ -14,6 +14,10 @@ void clkrst_init(void)
/* deassert reset */
tmp = readl(SC_RSTCTRL);
+#ifdef CONFIG_USB_XHCI_UNIPHIER
+ tmp |= SC_RSTCTRL_NRST_USB3B0 | SC_RSTCTRL_NRST_USB3C0 |
+ SC_RSTCTRL_NRST_GIO;
+#endif
#ifdef CONFIG_UNIPHIER_ETH
tmp |= SC_RSTCTRL_NRST_ETHER;
#endif
@@ -26,8 +30,19 @@ void clkrst_init(void)
writel(tmp, SC_RSTCTRL);
readl(SC_RSTCTRL); /* dummy read */
+#ifdef CONFIG_USB_XHCI_UNIPHIER
+ tmp = readl(SC_RSTCTRL2);
+ tmp |= SC_RSTCTRL2_NRST_USB3B1 | SC_RSTCTRL2_NRST_USB3C1;
+ writel(tmp, SC_RSTCTRL2);
+ readl(SC_RSTCTRL2); /* dummy read */
+#endif
+
/* privide clocks */
tmp = readl(SC_CLKCTRL);
+#ifdef CONFIG_USB_XHCI_UNIPHIER
+ tmp |= SC_CLKCTRL_CEN_USB31 | SC_CLKCTRL_CEN_USB30 |
+ SC_CLKCTRL_CEN_GIO;
+#endif
#ifdef CONFIG_UNIPHIER_ETH
tmp |= SC_CLKCTRL_CEN_ETHER;
#endif