ARM: uniphier: enable clocks to MIO/STDMAC on LD11 if USB is enabled
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>
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 @@
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)