On Fri, 03 Jun 2016 14:59:37 +0200, jeeja.kp@intel.com wrote:
From: Dharageswari R dharageswari.r@intel.com
SW needs to set the PGCTL.LSRMD = 1 to disable LPSRAM retention feature,otherwise it may lead to SRAM ECC Errors.
Is this needed only for ASoC driver, or for SKL in general?
thanks,
Takashi
Signed-off-by: Dharageswari R dharageswari.r@intel.com Signed-off-by: Jeeja KP jeeja.kp@intel.com Signed-off-by: Vinod Koul vinod.koul@intel.com
sound/soc/intel/skylake/skl.c | 3 +++ sound/soc/intel/skylake/skl.h | 2 ++ 2 files changed, 5 insertions(+)
diff --git a/sound/soc/intel/skylake/skl.c b/sound/soc/intel/skylake/skl.c index 06d8c26..5a08826 100644 --- a/sound/soc/intel/skylake/skl.c +++ b/sound/soc/intel/skylake/skl.c @@ -184,6 +184,7 @@ static int _skl_suspend(struct hdac_ext_bus *ebus) { struct skl *skl = ebus_to_skl(ebus); struct hdac_bus *bus = ebus_to_hbus(ebus);
struct pci_dev *pci = to_pci_dev(bus->dev); int ret;
snd_hdac_ext_bus_link_power_down_all(ebus);
@@ -193,6 +194,8 @@ static int _skl_suspend(struct hdac_ext_bus *ebus) return ret;
snd_hdac_bus_stop_chip(bus);
- update_pci_dword(pci, AZX_PCIREG_PGCTL,
AZX_PGCTL_LSRMD_MASK, AZX_PGCTL_LSRMD_MASK);diff --git a/sound/soc/intel/skylake/skl.h b/sound/soc/intel/skylake/skl.h index 4b4b387..bd8db1d 100644 --- a/sound/soc/intel/skylake/skl.h +++ b/sound/soc/intel/skylake/skl.h @@ -48,6 +48,8 @@ #define AZX_REG_VS_SDXEFIFOS_XBASE 0x1094 #define AZX_REG_VS_SDXEFIFOS_XINTERVAL 0x20
+#define AZX_PCIREG_PGCTL 0x44 +#define AZX_PGCTL_LSRMD_MASK (1 << 4) #define AZX_PCIREG_CGCTL 0x48 #define AZX_CGCTL_MISCBDCGE_MASK (1 << 6)
-- 2.5.0
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