Thread (17 messages) 17 messages, 3 authors, 2020-08-07

Re: [PATCH RFC leds + net-next v3 2/2] net: phy: marvell: add support for PHY LEDs via LED class

From: Marek Behun <hidden>
Date: 2020-07-25 09:35:32
Also in: linux-leds, lkml

On Sat, 25 Jul 2020 11:23:39 +0200
Pavel Machek [off-list ref] wrote:
Hi!
quoted
+static const struct marvell_led_mode_info marvell_led_mode_info[] = {
+	{ "link",			{ 0x0,  -1, 0x0,  -1,  -1,  -1, }, 0 },
+	{ "link/act",			{ 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, }, 0 },
+	{ "1Gbps/100Mbps/10Mbps",	{ 0x2,  -1,  -1,  -1,  -1,  -1, }, 0 },  
is this "1Gbps-10Mbps"?
Most of these modes mean "ON on event", eg
  "link" means ON when link up, else OFF. "
  "tx" means ON on when transmitting, else OFF
  "act" means ON when activity, else OFF
  "copper" means ON when copper link up, else OFF
but some are blinking modes
  "blink-act" means BLINK when activity, else OFF

Some modes can do ON and BLINK, these have one '/' in their name
  "link/act" means ON when link up, BLINK on activity, else OFF
  "link/rx" means ON when link up, BLINK on receive, else OFF

there is one mode, "1Gbps/100Mbps/10Mbps", which behaves differently:
  blinks 3 times when linked on 1Gbps
  blinks 2 times when linked on 100Mbps
  blinks 1 time when linked on 10Mbps
(and this blinking is repeating, ie blinks 3 times, pause, blinks 3 times,
pause)

Some modes are disjunctive:
  "100Mbps-fiber" means ON when linked on 100Mbps or via fiber, else OFF

quoted
+	{ "act",			{ 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, }, 0 },
+	{ "blink-act",			{ 0x4, 0x4, 0x4, 0x4, 0x4, 0x4, }, 0 },
+	{ "tx",				{ 0x5,  -1, 0x5,  -1, 0x5, 0x5, }, 0 },
+	{ "tx",				{  -1,  -1,  -1, 0x5,  -1,  -1, }, L3V5_TRANS },
+	{ "rx",				{  -1,  -1,  -1,  -1, 0x0, 0x0, }, 0 },
+	{ "rx",				{  -1, 0x0,  -1,  -1,  -1,  -1, }, L1V0_RECV },
+	{ "copper",			{ 0x6,  -1,  -1,  -1,  -1,  -1, }, 0 },
+	{ "copper",			{  -1, 0x0,  -1,  -1,  -1,  -1, }, L1V0_COPPER },
+	{ "1Gbps",			{ 0x7,  -1,  -1,  -1,  -1,  -1, }, 0 },
+	{ "link/rx",			{  -1, 0x2,  -1, 0x2, 0x2, 0x2, }, 0 },
+	{ "100Mbps-fiber",		{  -1, 0x5,  -1,  -1,  -1,  -1, }, L1V5_100_FIBER },
+	{ "100Mbps-10Mbps",		{  -1, 0x5,  -1,  -1,  -1,  -1, }, L1V5_100_10 },
+	{ "1Gbps-100Mbps",		{  -1, 0x6,  -1,  -1,  -1,  -1, }, 0 },
+	{ "1Gbps-10Mbps",		{  -1,  -1, 0x6, 0x6,  -1,  -1, }, 0 },
+	{ "100Mbps",			{  -1, 0x7,  -1,  -1,  -1,  -1, }, 0 },
+	{ "10Mbps",			{  -1,  -1, 0x7,  -1,  -1,  -1, }, 0 },
+	{ "fiber",			{  -1,  -1,  -1, 0x0,  -1,  -1, }, L3V0_FIBER },
+	{ "fiber",			{  -1,  -1,  -1, 0x7,  -1,  -1, }, L3V7_FIBER },
+	{ "FullDuplex",			{  -1,  -1,  -1, 0x7,  -1,  -1, }, L3V7_DUPLEX },
+	{ "FullDuplex",			{  -1,  -1,  -1,  -1, 0x6, 0x6, }, 0 },
+	{ "FullDuplex/collision",	{  -1,  -1,  -1,  -1, 0x7, 0x7, }, 0 },
+	{ "FullDuplex/collision",	{  -1,  -1, 0x2,  -1,  -1,  -1, }, L2V2_DUPLEX },
+	{ "ptp",			{  -1,  -1, 0x2,  -1,  -1,  -1, }, L2V2_PTP },
+	{ "init",			{  -1,  -1, 0x2,  -1,  -1,  -1, }, L2V2_INIT },
+	{ "los",			{  -1,  -1,  -1, 0x0,  -1,  -1, }, L3V0_LOS },
+	{ "hi-z",			{ 0xa, 0xa, 0xa, 0xa, 0xa, 0xa, }, 0 },
+	{ "blink",			{ 0xb, 0xb, 0xb, 0xb, 0xb, 0xb, }, 0 },
+};  
Certainly more documentation will be required here, what "ptp" setting
does, for example, is not very obvious to me.
"ptp" means it will light up when the PTP functionality is enabled on
the PHY and a PTP packet is received.
Best regards,
									Pavel
  
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