Hi Andrew, On 23/05/24 6:13 pm, Andrew Lunn wrote: > EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe > > On Thu, May 23, 2024 at 08:51:54AM +0000, Parthiban.Veerasooran@xxxxxxxxxxxxx wrote: >> Hi Andrew, >> >> On 22/05/24 10:14 pm, Andrew Lunn wrote: >>> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe >>> >>> On Wed, May 22, 2024 at 07:38:17PM +0530, Parthiban Veerasooran wrote: >>>> 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 >>> >>> What else can the LEDs indicate? >> There is no other indications. > > O.K. So it is probably not worth going the direction of using the > netde LED infrastructure to allow the use to configure the 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 >>> >>> Is this a function of the USB dongle? Or a function of the PHY? >> It is the function of USB dongle. > > So an OEM designing a dongle could make the LEDs do different things? Yes. > > You are solving the problem only for your reference design, and OEMs > are going to have to solve the same problem for their own design? > > This is why i'm asking is it a function of the PHY or the board. If it > is the PHY, we could have one generic solution for everybody using > that PHY. OK, it is a function of the board not PHY and also that depends on the board design based on the requirement I guess. Best regards, Parthiban V > > Andrew
