diff mbox

[06/11] ARM: uniphier: enable clocks to MIO/STDMAC on LD11 if USB is enabled

Message ID 1477579630-9692-7-git-send-email-yamada.masahiro@socionext.com
State Accepted
Commit 76466bd7be58c0059e5d44b31907cd1066b9697b
Headers show

Commit Message

Masahiro Yamada Oct. 27, 2016, 2:47 p.m. UTC 
At the moment, the clk driver is not clever enough to automatically
enable parent clocks like Linux.  Enable the STDMAC clock explicitly
if USB is enabled.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

---

 arch/arm/mach-uniphier/clk/clk-ld11.c | 11 +++++++++++
 arch/arm/mach-uniphier/sc64-regs.h    |  2 ++
 2 files changed, 13 insertions(+)

-- 
1.9.1

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diff mbox

Patch

diff --git a/arch/arm/mach-uniphier/clk/clk-ld11.c b/arch/arm/mach-uniphier/clk/clk-ld11.c
index 92a0733..ca8737d 100644
--- a/arch/arm/mach-uniphier/clk/clk-ld11.c
+++ b/arch/arm/mach-uniphier/clk/clk-ld11.c
@@ -9,6 +9,7 @@ 
 #include <linux/io.h>
 
 #include "../init.h"
+#include "../sc64-regs.h"
 #include "../sg-regs.h"
 
 void uniphier_ld11_clk_init(void)
@@ -25,4 +26,14 @@  void uniphier_ld11_clk_init(void)
 		writel(3, SG_ETPHYPSHUT);
 		writel(7, SG_ETPHYCNT);
 	}
+
+#ifdef CONFIG_USB_EHCI
+	{
+		/* FIXME: the current clk driver can not handle parents */
+		u32 tmp;
+		tmp = readl(SC_CLKCTRL4);
+		tmp |= SC_CLKCTRL4_MIO | SC_CLKCTRL4_STDMAC;
+		writel(tmp, SC_CLKCTRL4);
+	}
+#endif
 }
diff --git a/arch/arm/mach-uniphier/sc64-regs.h b/arch/arm/mach-uniphier/sc64-regs.h
index b0a4281..d3aa185 100644
--- a/arch/arm/mach-uniphier/sc64-regs.h
+++ b/arch/arm/mach-uniphier/sc64-regs.h
@@ -52,6 +52,8 @@ 
 #define SC_CLKCTRL		(SC_BASE_ADDR | 0x2100)
 #define SC_CLKCTRL3		(SC_BASE_ADDR | 0x2108)
 #define SC_CLKCTRL4		(SC_BASE_ADDR | 0x210c)
+#define   SC_CLKCTRL4_MIO		(1 << 10)
+#define   SC_CLKCTRL4_STDMAC		(1 << 8)
 #define   SC_CLKCTRL4_PERI		(1 << 7)
 #define   SC_CLKCTRL4_ETHER		(1 << 6)
 #define   SC_CLKCTRL4_NAND		(1 << 0)