From: Eero Nurkkala <ext-eero.nurkk...@nokia.com>
FCLK may get autogated so that it prevents the McBSP
to work properly. It is the bit 9 that must be set
for maintaining the McBSP FCLK.
Signed-off-by: Eero Nurkkala <ext-eero.nurkk...@nokia.com>
Signed-off-by: Eduardo Valentin <eduardo.valen...@nokia.com>
Acked-by: Jarkko Nikula <jarkko.nik...@nokia.com>
---
arch/arm/plat-omap/include/mach/mcbsp.h | 1 +
arch/arm/plat-omap/mcbsp.c | 6 +++---
2 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/arch/arm/plat-omap/include/mach/mcbsp.h
b/arch/arm/plat-omap/include/mach/mcbsp.h
index 776ea4d..895f001 100644
--- a/arch/arm/plat-omap/include/mach/mcbsp.h
+++ b/arch/arm/plat-omap/include/mach/mcbsp.h
@@ -254,6 +254,7 @@
#define RDISABLE 0x0001
/********************** McBSP SYSCONFIG bit definitions ********************/
+#define CLOCKACTIVITY(value) ((value)<<8)
#define SIDLEMODE(value) ((value)<<3)
#define ENAWAKEUP 0x0004
#define SOFTRST 0x0002
diff --git a/arch/arm/plat-omap/mcbsp.c b/arch/arm/plat-omap/mcbsp.c
index c2fd038..1db2ebc 100644
--- a/arch/arm/plat-omap/mcbsp.c
+++ b/arch/arm/plat-omap/mcbsp.c
@@ -316,8 +316,8 @@ static inline void omap34xx_mcbsp_request(struct omap_mcbsp
*mcbsp)
u16 syscon;
syscon = OMAP_MCBSP_READ(mcbsp->io_base, SYSCON);
- syscon &= ~(ENAWAKEUP | SIDLEMODE(0x03));
- syscon |= (ENAWAKEUP | SIDLEMODE(0x02));
+ syscon &= ~(ENAWAKEUP | SIDLEMODE(0x03) | CLOCKACTIVITY(0x03));
+ syscon |= (ENAWAKEUP | SIDLEMODE(0x02) | CLOCKACTIVITY(0x02));
OMAP_MCBSP_WRITE(mcbsp->io_base, SYSCON, syscon);
OMAP_MCBSP_WRITE(mcbsp->io_base, WAKEUPEN, XRDYEN | RRDYEN);
@@ -333,7 +333,7 @@ static inline void omap34xx_mcbsp_free(struct omap_mcbsp
*mcbsp)
u16 syscon;
syscon = OMAP_MCBSP_READ(mcbsp->io_base, SYSCON);
- syscon &= ~(ENAWAKEUP | SIDLEMODE(0x03));
+ syscon &= ~(ENAWAKEUP | SIDLEMODE(0x03) | CLOCKACTIVITY(0x03));
OMAP_MCBSP_WRITE(mcbsp->io_base, SYSCON, syscon);
OMAP_MCBSP_WRITE(mcbsp->io_base, WAKEUPEN, 0);
--
1.6.2.GIT
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