From 02c06e4abc0680afd31bf481a803541556757fb6 Mon Sep 17 00:00:00 2001 From: Wey-Yi Guy Date: Fri, 17 Jul 2009 09:30:14 -0700 Subject: [PATCH] iwlagn: modify digital SVR for 1000 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 Signed-off-by: Reinette Chatre Signed-off-by: John W. Linville --- drivers/net/wireless/iwlwifi/iwl-5000.c | 7 +++++++ drivers/net/wireless/iwlwifi/iwl-prph.h | 5 ++++- 2 files changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/iwlwifi/iwl-5000.c b/drivers/net/wireless/iwlwifi/iwl-5000.c index 85e8bac499a7..3f9da6e47108 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 3b9cac3fd216..d393e8f02102 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) -- 2.20.1