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arm: dts: imx8mq-evk: add phy-reset-gpios for fec1

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Instead of resetting the ethernet phy through functions in imx8mq_evk.c, let the
driver reset the phy via dts description adding a reset duration of 10 ms
following atheros 8031's datasheet recommendation.

Signed-off-by: Alifer Moraes <alifer.wsdm@gmail.com>
This commit is contained in:
Alifer Moraes 2020-02-14 16:18:50 -03:00 • committed by Stefano Babic
parent 02ee7a4aa5
commit a604b67b87
2 changed files with 2 additions and 18 deletions
arch/arm/dts
imx8mq-evk.dts
board/freescale/imx8mq_evk
imx8mq_evk.c

2
arch/arm/dts/imx8mq-evk.dts
View file

@ -104,6 +104,8 @@
pinctrl-0 = <&pinctrl_fec1>;
phy-mode = "rgmii-id";
phy-handle = <&ethphy0>;
phy-reset-gpios = <&gpio1 9 GPIO_ACTIVE_LOW>;
phy-reset-duration = <10>;
fsl,magic-packet;
status = "okay";

18
board/freescale/imx8mq_evk/imx8mq_evk.c
View file

@ -64,29 +64,11 @@ int dram_init(void)
}
#ifdef CONFIG_FEC_MXC
#define FEC_RST_PAD IMX_GPIO_NR(1, 9)
static iomux_v3_cfg_t const fec1_rst_pads[] = {
IMX8MQ_PAD_GPIO1_IO09__GPIO1_IO9 | MUX_PAD_CTRL(NO_PAD_CTRL),
};
static void setup_iomux_fec(void)
{
imx_iomux_v3_setup_multiple_pads(fec1_rst_pads,
ARRAY_SIZE(fec1_rst_pads));
gpio_request(IMX_GPIO_NR(1, 9), "fec1_rst");
gpio_direction_output(IMX_GPIO_NR(1, 9), 0);
udelay(500);
gpio_direction_output(IMX_GPIO_NR(1, 9), 1);
}
static int setup_fec(void)
{
struct iomuxc_gpr_base_regs *gpr =
(struct iomuxc_gpr_base_regs *)IOMUXC_GPR_BASE_ADDR;
setup_iomux_fec();
/* Use 125M anatop REF_CLK1 for ENET1, not from external */
clrsetbits_le32(&gpr->gpr[1], BIT(13) | BIT(17), 0);
return set_clk_enet(ENET_125MHZ);