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ar71xx: mikrotik: rb91x: fix 10M ethernet link speed 

Extensive testing on the board showed that ethernet does
not work when forced to 10Mbps.

Trial-and-error revealed that the correct PLL value
should be altered to 0x00001313 (iso 0x00001616)

The change is done for this specific board only as I do not have
other boards using this specific SoC.

The board now works correctly in 1000, 100 and 10 Mode

Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
This commit is contained in:
Koen Vandeputte 2021-10-12 11:02:30 +02:00
parent c72ea2a6c7
commit 5e8b9624f1
1 changed files with 1 additions and 0 deletions
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target/linux/ar71xx/files/arch/mips/ath79/mach-rb91x.c
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@ -318,6 +318,7 @@ static void __init rb711gr100_setup(void)
ath79_init_mac(ath79_eth0_data.mac_addr, ath79_mac_base, 0);
ath79_eth0_data.phy_if_mode = PHY_INTERFACE_MODE_RGMII;
ath79_eth0_data.phy_mask = BIT(0);
ath79_eth0_pll_data.pll_10 = 0x00001313;
ath79_eth0_pll_data.pll_1000 = 0x02000000;
ath79_register_eth(0);