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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>
This commit is contained in:
Masahiro Yamada 2016-10-27 23:47:05 +09:00
parent a8b66ac87c
commit 76466bd7be
2 changed files with 13 additions and 0 deletions
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11
arch/arm/mach-uniphier/clk/clk-ld11.c
View File

@ -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
}

2
arch/arm/mach-uniphier/sc64-regs.h
View File

@ -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)