From: Wey-Yi Guy <wey-yi.w.guy@xxxxxxxxx>
On 1000, there are two Switching Voltage Regulators (SVR). The first one
apply digital voltage level (1.32V) for PCIe block and core. We need to
use this regulator to solve a stability issue related to noisy DC2DC
line in the silicon.
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@xxxxxxxxx>
Signed-off-by: Reinette Chatre <reinette.chatre@xxxxxxxxx>
---
drivers/net/wireless/iwlwifi/iwl-5000.c | 7 +++++++
drivers/net/wireless/iwlwifi/iwl-prph.h | 5 ++++-
2 files changed, 11 insertions(+), 1 deletions(-)
diff --git a/drivers/net/wireless/iwlwifi/iwl-5000.c b/drivers/net/wireless/iwlwifi/iwl-5000.c
index 85e8bac..3f9da6e 100644
--- a/drivers/net/wireless/iwlwifi/iwl-5000.c
+++ b/drivers/net/wireless/iwlwifi/iwl-5000.c
@@ -239,6 +239,13 @@ static void iwl5000_nic_config(struct iwl_priv *priv)
APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
+ if ((priv->hw_rev & CSR_HW_REV_TYPE_MSK) == CSR_HW_REV_TYPE_1000) {
+ /* Setting digital SVR for 1000 card to 1.32V */
+ iwl_set_bits_mask_prph(priv, APMG_DIGITAL_SVR_REG,
+ APMG_SVR_DIGITAL_VOLTAGE_1_32,
+ ~APMG_SVR_VOLTAGE_CONFIG_BIT_MSK);
+ }
+
spin_unlock_irqrestore(&priv->lock, flags);
}
diff --git a/drivers/net/wireless/iwlwifi/iwl-prph.h b/drivers/net/wireless/iwlwifi/iwl-prph.h
index 3b9cac3..d393e8f 100644
--- a/drivers/net/wireless/iwlwifi/iwl-prph.h
+++ b/drivers/net/wireless/iwlwifi/iwl-prph.h
@@ -80,6 +80,8 @@
#define APMG_RFKILL_REG (APMG_BASE + 0x0014)
#define APMG_RTC_INT_STT_REG (APMG_BASE + 0x001c)
#define APMG_RTC_INT_MSK_REG (APMG_BASE + 0x0020)
+#define APMG_DIGITAL_SVR_REG (APMG_BASE + 0x0058)
+#define APMG_ANALOG_SVR_REG (APMG_BASE + 0x006C)
#define APMG_CLK_VAL_DMA_CLK_RQT (0x00000200)
#define APMG_CLK_VAL_BSM_CLK_RQT (0x00000800)
@@ -91,7 +93,8 @@
#define APMG_PS_CTRL_VAL_PWR_SRC_VMAIN (0x00000000)
#define APMG_PS_CTRL_VAL_PWR_SRC_MAX (0x01000000) /* 3945 only */
#define APMG_PS_CTRL_VAL_PWR_SRC_VAUX (0x02000000)
-
+#define APMG_SVR_VOLTAGE_CONFIG_BIT_MSK (0x000001E0) /* bit 8:5 */
+#define APMG_SVR_DIGITAL_VOLTAGE_1_32 (0x00000060)
#define APMG_PCIDEV_STT_VAL_L1_ACT_DIS (0x00000800)
--
1.5.6.3
--
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