By default, LAN9500A configures the external LEDs to the below function. nSPD_LED -> Speed Indicator nLNKA_LED -> Link and Activity Indicator nFDX_LED -> Full Duplex Link Indicator But, EVB-LAN8670-USB uses the below external LEDs function which can be enabled by writing 1 to the LED Select (LED_SEL) bit in the LAN9500A. nSPD_LED -> Speed Indicator nLNKA_LED -> Link Indicator nFDX_LED -> Activity Indicator Signed-off-by: Parthiban Veerasooran <Parthiban.Veerasooran@xxxxxxxxxxxxx> --- drivers/net/usb/smsc95xx.c | 12 ++++++++++++ drivers/net/usb/smsc95xx.h | 1 + 2 files changed, 13 insertions(+) diff --git a/drivers/net/usb/smsc95xx.c b/drivers/net/usb/smsc95xx.c index cbea24666479..05975461bf10 100644 --- a/drivers/net/usb/smsc95xx.c +++ b/drivers/net/usb/smsc95xx.c @@ -1006,6 +1006,18 @@ static int smsc95xx_reset(struct usbnet *dev) /* Configure GPIO pins as LED outputs */ write_buf = LED_GPIO_CFG_SPD_LED | LED_GPIO_CFG_LNK_LED | LED_GPIO_CFG_FDX_LED; + + /* Set LED Select (LED_SEL) bit for the external LED pins functionality + * in the Microchip's EVB-LAN8670-USB 10BASE-T1S Ethernet device which + * uses the below LED function. + * nSPD_LED -> Speed Indicator + * nLNKA_LED -> Link Indicator + * nFDX_LED -> Activity Indicator + */ + if (dev->udev->descriptor.idVendor == 0x184F && + dev->udev->descriptor.idProduct == 0x0051) + write_buf |= LED_GPIO_CFG_LED_SEL; + ret = smsc95xx_write_reg(dev, LED_GPIO_CFG, write_buf); if (ret < 0) return ret; diff --git a/drivers/net/usb/smsc95xx.h b/drivers/net/usb/smsc95xx.h index 013bf42e27f2..134f3c2fddd9 100644 --- a/drivers/net/usb/smsc95xx.h +++ b/drivers/net/usb/smsc95xx.h @@ -114,6 +114,7 @@ /* LED General Purpose IO Configuration Register */ #define LED_GPIO_CFG (0x24) +#define LED_GPIO_CFG_LED_SEL BIT(31) /* Separate Link/Act LEDs */ #define LED_GPIO_CFG_SPD_LED (0x01000000) /* GPIOz as Speed LED */ #define LED_GPIO_CFG_LNK_LED (0x00100000) /* GPIOy as Link LED */ #define LED_GPIO_CFG_FDX_LED (0x00010000) /* GPIOx as Full Duplex LED */ base-commit: 4b377b4868ef17b040065bd468668c707d2477a5 -- 2.34.1
