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| author | Amjad Ouled-Ameur <aouledameur@baylibre.com> | 2021-10-29 16:08:17 +0200 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2022-01-16 08:31:03 -0500 |
| commit | 609983e981a0a7f053ee6f9f6cd2772226a33000 (patch) | |
| tree | 747941ffda575cae26db20d7fa043c118a45d5bd /board | |
| parent | f44bcb9f0d73c13738b8f3e437bda75fda642ad7 (diff) | |
| download | u-boot-609983e981a0a7f053ee6f9f6cd2772226a33000.zip u-boot-609983e981a0a7f053ee6f9f6cd2772226a33000.tar.gz u-boot-609983e981a0a7f053ee6f9f6cd2772226a33000.tar.bz2 | |
board: ti: am335x: Choose CPSW or PRUSS configuration based on jumper setting
The am335x-ice-v2 board's Ethernet ports can be configured
in 'MII' or 'RMII' mode to be connected to 'PRUSS' or 'CPSW'
Ethernet subsystems.
This patch sets the environment variable 'ice_mii' to
'mii' or 'rmii' accordingly. Based on that we choose the
appropriate board devicetree i.e. 'am335x-ice-v2.dtb' or
'am335x-ice-v2-prueth.dtb'.
Since there are 2 Ethernet ports with 2 modes, there can be 4
configurations but for now we consider both ports in different modes
to be an invalid configuration and prevent boot in that case.
Signed-off-by: Roger Quadros <rogerq@ti.com>
[Amjad: use overlay instead of using new am335x-ice-v2-prueth.dtb]
Signed-off-by: Amjad Ouled-Ameur <aouledameur@baylibre.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
[trini: Make prueth_is_mii be marked __maybe_unused]
Signed-off-by: Tom Rini <trini@konsulko.com>
Diffstat (limited to 'board')
| -rw-r--r-- | board/ti/am335x/board.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/board/ti/am335x/board.c b/board/ti/am335x/board.c index e8555de..9b70670 100644 --- a/board/ti/am335x/board.c +++ b/board/ti/am335x/board.c @@ -11,6 +11,7 @@ #include <dm.h> #include <env.h> #include <errno.h> +#include <hang.h> #include <image.h> #include <init.h> #include <malloc.h> @@ -38,6 +39,7 @@ #include <miiphy.h> #include <cpsw.h> #include <linux/bitops.h> +#include <linux/compiler.h> #include <linux/delay.h> #include <power/tps65217.h> #include <power/tps65910.h> @@ -691,6 +693,8 @@ done: } #endif +static bool __maybe_unused prueth_is_mii = true; + /* * Basic board specific setup. Pinmux has been handled already. */ @@ -710,6 +714,8 @@ int board_init(void) if (board_is_icev2()) { int rv; u32 reg; + bool eth0_is_mii = true; + bool eth1_is_mii = true; REQUEST_AND_SET_GPIO(GPIO_PR1_MII_CTRL); /* Make J19 status available on GPIO1_26 */ @@ -740,6 +746,7 @@ int board_init(void) writel(reg, GPIO0_IRQSTATUS1); /* clear irq */ /* RMII mode */ printf("ETH0, CPSW\n"); + eth0_is_mii = false; } else { /* MII mode */ printf("ETH0, PRU\n"); @@ -752,12 +759,21 @@ int board_init(void) /* RMII mode */ printf("ETH1, CPSW\n"); gpio_set_value(GPIO_MUX_MII_CTRL, 1); + eth1_is_mii = false; } else { /* MII mode */ printf("ETH1, PRU\n"); cdce913_data.pdiv2 = 4; /* 25MHz PHY clk */ } + if (eth0_is_mii != eth1_is_mii) { + printf("Unsupported Ethernet port configuration\n"); + printf("Both ports must be set as RMII or MII\n"); + hang(); + } + + prueth_is_mii = eth0_is_mii; + /* disable rising edge IRQs */ reg = readl(GPIO0_RISINGDETECT) & ~BIT(11); writel(reg, GPIO0_RISINGDETECT); @@ -852,6 +868,8 @@ int board_late_init(void) if (is_valid_ethaddr(mac_addr)) eth_env_set_enetaddr("eth1addr", mac_addr); } + + env_set("ice_mii", prueth_is_mii ? "mii" : "rmii"); #endif if (!env_get("serial#")) { |