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120 lines
4.9 KiB
Diff
120 lines
4.9 KiB
Diff
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From eef2d9aeb08a227d0a9c5734214425a3b9693f50 Mon Sep 17 00:00:00 2001
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From: James Hughes <james.hughes@raspberrypi.org>
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Date: Thu, 31 Oct 2019 14:39:44 +0000
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Subject: [PATCH] net:phy:2711 Allow ethernet LED mode to be set via
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device tree
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Add device tree entries and code to allow the specification of
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the lighting modes for the LED's on the ethernet connector.
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Signed-off-by: James Hughes <james.hughes@raspberrypi.org>
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---
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arch/arm/boot/dts/bcm2711-rpi-4-b.dts | 3 +++
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arch/arm/boot/dts/bcm2838.dtsi | 1 +
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arch/arm/boot/dts/overlays/README | 28 +++++++++++++++++++--------
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drivers/net/phy/broadcom.c | 9 +++++++--
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4 files changed, 31 insertions(+), 10 deletions(-)
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--- a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
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+++ b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
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@@ -334,5 +334,8 @@
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pwr_led_gpio = <&pwr_led>,"gpios:4";
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pwr_led_activelow = <&pwr_led>,"gpios:8";
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pwr_led_trigger = <&pwr_led>,"linux,default-trigger";
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+
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+ eth_led0 = <&phy1>,"led-modes:0";
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+ eth_led1 = <&phy1>,"led-modes:4";
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};
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};
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--- a/arch/arm/boot/dts/bcm2838.dtsi
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+++ b/arch/arm/boot/dts/bcm2838.dtsi
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@@ -380,6 +380,7 @@
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/* No interrupts - use PHY_POLL */
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max-speed = <1000>;
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reg = <0x1>;
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+ led-modes = <0x02 0x02>;
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};
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};
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};
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--- a/arch/arm/boot/dts/overlays/README
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+++ b/arch/arm/boot/dts/overlays/README
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@@ -102,26 +102,38 @@ Params:
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eee Enable Energy Efficient Ethernet support for
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compatible devices (default "on"). See also
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- "tx_lpi_timer".
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+ "tx_lpi_timer". Pi3B+ only.
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eth_downshift_after Set the number of auto-negotiation failures
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after which the 1000Mbps modes are disabled.
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Legal values are 2, 3, 4, 5 and 0, where
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- 0 means never downshift (default 2).
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+ 0 means never downshift (default 2). Pi3B+ only.
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- eth_led0 Set mode of LED0 (usually orange) (default
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- "1"). The legal values are:
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- 0=link/activity 1=link1000/activity
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+ eth_led0 Set mode of LED0 (usually orange). The legal
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+ values are:
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+
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+ Pi3B+
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+
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+ 0=link/activity 1=link1000/activity (default)
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2=link100/activity 3=link10/activity
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4=link100/1000/activity 5=link10/1000/activity
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6=link10/100/activity 14=off 15=on
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- eth_led1 Set mode of LED1 (usually green) (default
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- "6"). See eth_led0 for legal values.
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+ Pi4
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+
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+ 0=Speed/Activity (default) 1=Speed
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+ 2=Speed/Flash activity 3=FDX
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+ 4=Off 5=On
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+ 6=Alt 7=Speed/Flash
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+ 8=Link 9=Activity
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+
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+ eth_led1 Set mode of LED1 (usually green) (Pi3B+ default
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+ "6", Pi4 default "0"). See eth_led0 for legal
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+ values.
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eth_max_speed Set the maximum speed a link is allowed
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to negotiate. Legal values are 10, 100 and
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- 1000 (default 1000).
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+ 1000 (default 1000). Pi3B+ only.
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i2c_arm Set to "on" to enable the ARM's i2c interface
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(default "off")
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--- a/drivers/net/phy/broadcom.c
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+++ b/drivers/net/phy/broadcom.c
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@@ -267,6 +267,9 @@ static void bcm54xx_adjust_rxrefclk(stru
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static int bcm54xx_config_init(struct phy_device *phydev)
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{
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int reg, err, val;
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+ u32 led_modes[] = {BCM_LED_MULTICOLOR_LINK_ACT,
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+ BCM_LED_MULTICOLOR_LINK_ACT};
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+ struct device_node *np = phydev->mdio.dev.of_node;
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reg = phy_read(phydev, MII_BCM54XX_ECR);
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if (reg < 0)
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@@ -318,6 +321,8 @@ static int bcm54xx_config_init(struct ph
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bcm54xx_phydsp_config(phydev);
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+ of_property_read_u32_array(np, "led-modes", led_modes, 2);
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+
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/* Encode link speed into LED1 and LED3 pair (green/amber).
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* Also flash these two LEDs on activity. This means configuring
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* them for MULTICOLOR and encoding link/activity into them.
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@@ -327,8 +332,8 @@ static int bcm54xx_config_init(struct ph
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bcm_phy_write_shadow(phydev, BCM5482_SHD_LEDS1, val);
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val = BCM_LED_MULTICOLOR_IN_PHASE |
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- BCM5482_SHD_LEDS1_LED1(BCM_LED_MULTICOLOR_LINK_ACT) |
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- BCM5482_SHD_LEDS1_LED3(BCM_LED_MULTICOLOR_LINK_ACT);
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+ BCM5482_SHD_LEDS1_LED1(led_modes[0]) |
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+ BCM5482_SHD_LEDS1_LED3(led_modes[1]);
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bcm_phy_write_exp(phydev, BCM_EXP_MULTICOLOR, val);
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return 0;
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