[PATCH net 6/9] r8152: disable test IO for RTL8153B
From: Hayes Wang <hidden>
Date: 2020-01-21 12:43:05
Also in:
linux-usb, lkml
Subsystem:
networking drivers, the rest, usb networking drivers · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
For RTL8153B with QFN32, disable test IO. Otherwise, it may casue abnormal behavior for the device randomly. Signed-off-by: Hayes Wang <redacted> --- drivers/net/usb/r8152.c | 10 ++++++++++ 1 file changed, 10 insertions(+)
diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
index eabc7b43d48b..958c7c342bfb 100644
--- a/drivers/net/usb/r8152.c
+++ b/drivers/net/usb/r8152.c@@ -312,6 +312,7 @@ /* PLA_PHY_PWR */ #define TX_10M_IDLE_EN 0x0080 #define PFM_PWM_SWITCH 0x0040 +#define TEST_IO_OFF BIT(4) /* PLA_MAC_PWR_CTRL */ #define D3_CLK_GATED_EN 0x00004000
@@ -5537,6 +5538,15 @@ static void r8153b_init(struct r8152 *tp) ocp_data &= ~PLA_MCU_SPDWN_EN; ocp_write_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL3, ocp_data); + if (tp->version == RTL_VER_09) { + /* Disable Test IO for 32QFN */ + if (ocp_read_byte(tp, MCU_TYPE_PLA, 0xdc00) & BIT(5)) { + ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_PHY_PWR); + ocp_data |= TEST_IO_OFF; + ocp_write_word(tp, MCU_TYPE_PLA, PLA_PHY_PWR, ocp_data); + } + } + set_bit(GREEN_ETHERNET, &tp->flags); /* rx aggregation */
--
2.21.0