From 12010ae212267f4b95496bfcfcb9f6230d4654eb Mon Sep 17 00:00:00 2001 From: Phil Elwell Date: Tue, 27 Nov 2018 16:56:50 +0000 Subject: [PATCH 491/496] BCM270X_DT: Add new Ethernet DT parameters Add "eth_downshift_after" DT parameter to allow the delay before the downshift to be specified. The default is 2 auto-negotiation cycles, and legal values are 2, 3, 4, 5 and 0 (disabled). Add "eth_max_speed" DT parameter as a way of prohibiting 1000Mbps links. This can be used to avoid the delay until the downshift mechanism activates. Legal values are 10, 100 and 1000, where the default is unlimited (effectively 1000Mbps). Signed-off-by: Phil Elwell --- arch/arm/boot/dts/bcm283x-rpi-lan7515.dtsi | 2 ++ arch/arm/boot/dts/overlays/README | 9 +++++++++ 2 files changed, 11 insertions(+) diff --git a/arch/arm/boot/dts/bcm283x-rpi-lan7515.dtsi b/arch/arm/boot/dts/bcm283x-rpi-lan7515.dtsi index d1fdeb44a625..9ae96c02bbb1 100644 --- a/arch/arm/boot/dts/bcm283x-rpi-lan7515.dtsi +++ b/arch/arm/boot/dts/bcm283x-rpi-lan7515.dtsi @@ -48,5 +48,7 @@ tx_lpi_timer = <ðernet>,"microchip,tx-lpi-timer:0"; eth_led0 = <ðernet>,"microchip,led-modes:0"; eth_led1 = <ðernet>,"microchip,led-modes:4"; + eth_downshift_after = <ð_phy>,"microchip,downshift-after:0"; + eth_max_speed = <ð_phy>,"max-speed:0"; }; }; diff --git a/arch/arm/boot/dts/overlays/README b/arch/arm/boot/dts/overlays/README index 4ac8c2d6c4b7..91f5bfa2dbd1 100644 --- a/arch/arm/boot/dts/overlays/README +++ b/arch/arm/boot/dts/overlays/README @@ -98,6 +98,11 @@ Params: compatible devices (default "on"). See also "tx_lpi_timer". + eth_downshift_after Set the number of auto-negotiation failures + after which the 1000Mbps modes are disabled. + Legal values are 2, 3, 4, 5 and 0, where + 0 means never downshift (default 2). + eth_led0 Set mode of LED0 (usually orange) (default "1"). The legal values are: 0=link/activity 1=link1000/activity @@ -108,6 +113,10 @@ Params: eth_led1 Set mode of LED1 (usually green) (default "6"). See eth_led0 for legal values. + eth_max_speed Set the maximum speed a link is allowed + to negotiate. Legal values are 10, 100 and + 1000 (default 1000). + i2c_arm Set to "on" to enable the ARM's i2c interface (default "off") -- 2.19.1