1. Do not hard reset the BBP. We can use soft reset instead. This
change has some help to the calibration failure issue.
2. Enable falling back to legacy rate from the HT/RTS rate by
setting the HT_FBK_TO_LEGACY register.
3. Implement MCS rate specific maximum PSDU size. It can improve
the transmission quality under the low RSSI condition.
4. Set BBP_84 register value to 0x19. This is used for extension
channel overlapping IOT.
Signed-off-by: Shiji Yang <[email protected]>
---
drivers/net/wireless/ralink/rt2x00/rt2800.h | 18 ++++++++++++++
.../net/wireless/ralink/rt2x00/rt2800lib.c | 24 +++++++++++++++++++
.../net/wireless/ralink/rt2x00/rt2800mmio.c | 3 +++
3 files changed, 45 insertions(+)
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2800.h b/drivers/net/wireless/ralink/rt2x00/rt2800.h
index de2ee5ffc..48521e455 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2800.h
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800.h
@@ -870,6 +870,18 @@
#define LED_CFG_Y_LED_MODE FIELD32(0x30000000)
#define LED_CFG_LED_POLAR FIELD32(0x40000000)
+/*
+ * AMPDU_MAX_LEN_20M1S: Per MCS max A-MPDU length, 20 MHz, MCS 0-7
+ * AMPDU_MAX_LEN_20M2S: Per MCS max A-MPDU length, 20 MHz, MCS 8-15
+ * AMPDU_MAX_LEN_40M1S: Per MCS max A-MPDU length, 40 MHz, MCS 0-7
+ * AMPDU_MAX_LEN_40M2S: Per MCS max A-MPDU length, 40 MHz, MCS 8-15
+ * Maximum A-MPDU length = 2^(AMPDU_MAX - 5) kilobytes
+ */
+#define AMPDU_MAX_LEN_20M1S 0x1030
+#define AMPDU_MAX_LEN_20M2S 0x1034
+#define AMPDU_MAX_LEN_40M1S 0x1038
+#define AMPDU_MAX_LEN_40M2S 0x103C
+
/*
* AMPDU_BA_WINSIZE: Force BlockAck window size
* FORCE_WINSIZE_ENABLE:
@@ -1545,6 +1557,12 @@
*/
#define EXP_ACK_TIME 0x1380
+/*
+ * HT_FBK_TO_LEGACY: Enable/Disable HT/RTS fallback to OFDM/CCK rate
+ * Not available for legacy SoCs
+ */
+#define HT_FBK_TO_LEGACY 0x1384
+
/* TX_PWR_CFG_5 */
#define TX_PWR_CFG_5 0x1384
#define TX_PWR_CFG_5_MCS16_CH0 FIELD32(0x0000000f)
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
index 7fb9bc83b..08d979f69 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
@@ -5903,6 +5903,7 @@ static int rt2800_init_registers(struct rt2x00_dev *rt2x00dev)
struct rt2800_drv_data *drv_data = rt2x00dev->drv_data;
u32 reg;
u16 eeprom;
+ u8 bbp;
unsigned int i;
int ret;
@@ -5912,6 +5913,19 @@ static int rt2800_init_registers(struct rt2x00_dev *rt2x00dev)
if (ret)
return ret;
+ if (rt2x00_rt(rt2x00dev, RT6352)) {
+ rt2800_register_write(rt2x00dev, MAC_SYS_CTRL, 0x01);
+
+ bbp = rt2800_bbp_read(rt2x00dev, 21);
+ bbp |= 0x01;
+ rt2800_bbp_write(rt2x00dev, 21, bbp);
+ bbp = rt2800_bbp_read(rt2x00dev, 21);
+ bbp &= (~0x01);
+ rt2800_bbp_write(rt2x00dev, 21, bbp);
+
+ rt2800_register_write(rt2x00dev, MAC_SYS_CTRL, 0x00);
+ }
+
rt2800_register_write(rt2x00dev, LEGACY_BASIC_RATE, 0x0000013f);
rt2800_register_write(rt2x00dev, HT_BASIC_RATE, 0x00008003);
@@ -6065,6 +6079,14 @@ static int rt2800_init_registers(struct rt2x00_dev *rt2x00dev)
reg = rt2800_register_read(rt2x00dev, TX_ALC_CFG_1);
rt2x00_set_field32(®, TX_ALC_CFG_1_ROS_BUSY_EN, 0);
rt2800_register_write(rt2x00dev, TX_ALC_CFG_1, reg);
+
+ rt2800_register_write(rt2x00dev, AMPDU_MAX_LEN_20M1S, 0x77754433);
+ rt2800_register_write(rt2x00dev, AMPDU_MAX_LEN_20M2S, 0x77765543);
+ rt2800_register_write(rt2x00dev, AMPDU_MAX_LEN_40M1S, 0x77765544);
+ rt2800_register_write(rt2x00dev, AMPDU_MAX_LEN_40M2S, 0x77765544);
+
+ rt2800_register_write(rt2x00dev, HT_FBK_TO_LEGACY, 0x1010);
+
} else {
rt2800_register_write(rt2x00dev, TX_SW_CFG0, 0x00000000);
rt2800_register_write(rt2x00dev, TX_SW_CFG1, 0x00080606);
@@ -7283,6 +7305,8 @@ static void rt2800_init_bbp_6352(struct rt2x00_dev *rt2x00dev)
rt2800_bbp_dcoc_write(rt2x00dev, 159, 0x64);
rt2800_bbp4_mac_if_ctrl(rt2x00dev);
+
+ rt2800_bbp_write(rt2x00dev, 84, 0x19);
}
static void rt2800_init_bbp(struct rt2x00_dev *rt2x00dev)
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2800mmio.c b/drivers/net/wireless/ralink/rt2x00/rt2800mmio.c
index 862098f75..5323acff9 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2800mmio.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800mmio.c
@@ -760,6 +760,9 @@ int rt2800mmio_init_registers(struct rt2x00_dev *rt2x00dev)
rt2x00mmio_register_write(rt2x00dev, PWR_PIN_CFG, 0x00000003);
+ if (rt2x00_rt(rt2x00dev, RT6352))
+ return 0;
+
reg = 0;
rt2x00_set_field32(®, MAC_SYS_CTRL_RESET_CSR, 1);
rt2x00_set_field32(®, MAC_SYS_CTRL_RESET_BBP, 1);
--
2.39.2
On Thu, Oct 19, 2023 at 07:58:56PM +0800, Shiji Yang wrote:
> 1. Do not hard reset the BBP. We can use soft reset instead. This
> change has some help to the calibration failure issue.
> 2. Enable falling back to legacy rate from the HT/RTS rate by
> setting the HT_FBK_TO_LEGACY register.
> 3. Implement MCS rate specific maximum PSDU size. It can improve
> the transmission quality under the low RSSI condition.
> 4. Set BBP_84 register value to 0x19. This is used for extension
> channel overlapping IOT.
>
> Signed-off-by: Shiji Yang <[email protected]>
Acked-by: Stanislaw Gruszka <[email protected]>
Shiji Yang <[email protected]> wrote:
> 1. Do not hard reset the BBP. We can use soft reset instead. This
> change has some help to the calibration failure issue.
> 2. Enable falling back to legacy rate from the HT/RTS rate by
> setting the HT_FBK_TO_LEGACY register.
> 3. Implement MCS rate specific maximum PSDU size. It can improve
> the transmission quality under the low RSSI condition.
> 4. Set BBP_84 register value to 0x19. This is used for extension
> channel overlapping IOT.
>
> Signed-off-by: Shiji Yang <[email protected]>
> Acked-by: Stanislaw Gruszka <[email protected]>
3 patches applied to wireless-next.git, thanks.
1ffe76d5ae78 wifi: rt2x00: improve MT7620 register initialization
a28533c6be17 wifi: rt2x00: rework MT7620 channel config function
cca74bed37af wifi: rt2x00: rework MT7620 PA/LNA RF calibration
--
https://patchwork.kernel.org/project/linux-wireless/patch/TYAP286MB031553CCD4B7A3B89C85935DBCD4A@TYAP286MB0315.JPNP286.PROD.OUTLOOK.COM/
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches