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authorJonathan McDowell <noodles@earth.li>2020-05-21 12:49:34 +0100
committerDavid S. Miller <davem@davemloft.net>2020-05-22 16:07:02 -0700
commita96ac8a0045e3cbe3e5af6d1b3c78c6c2065dec5 (patch)
tree6d13f31bd478131d4f6e28ba9f686c5bca2fdb50 /drivers/net
parent7a40a2d22b79131a4826777864f39b19eaf7c857 (diff)
downloadlinux-stericsson-a96ac8a0045e3cbe3e5af6d1b3c78c6c2065dec5.tar.gz
net: ethernet: stmmac: Enable interface clocks on probe for IPQ806x
The ipq806x_gmac_probe() function enables the PTP clock but not the appropriate interface clocks. This means that if the bootloader hasn't done so attempting to bring up the interface will fail with an error like: [ 59.028131] ipq806x-gmac-dwmac 37600000.ethernet: Failed to reset the dma [ 59.028196] ipq806x-gmac-dwmac 37600000.ethernet eth1: stmmac_hw_setup: DMA engine initialization failed [ 59.034056] ipq806x-gmac-dwmac 37600000.ethernet eth1: stmmac_open: Hw setup failed This patch, a slightly cleaned up version of one posted by Sergey Sergeev in: https://forum.openwrt.org/t/support-for-mikrotik-rb3011uias-rm/4064/257 correctly enables the clock; we have already configured the source just before this. Tested on a MikroTik RB3011. Signed-off-by: Jonathan McDowell <noodles@earth.li> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c
index 6ae13dc19510..02102c781a8c 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c
@@ -319,6 +319,19 @@ static int ipq806x_gmac_probe(struct platform_device *pdev)
/* Enable PTP clock */
regmap_read(gmac->nss_common, NSS_COMMON_CLK_GATE, &val);
val |= NSS_COMMON_CLK_GATE_PTP_EN(gmac->id);
+ switch (gmac->phy_mode) {
+ case PHY_INTERFACE_MODE_RGMII:
+ val |= NSS_COMMON_CLK_GATE_RGMII_RX_EN(gmac->id) |
+ NSS_COMMON_CLK_GATE_RGMII_TX_EN(gmac->id);
+ break;
+ case PHY_INTERFACE_MODE_SGMII:
+ val |= NSS_COMMON_CLK_GATE_GMII_RX_EN(gmac->id) |
+ NSS_COMMON_CLK_GATE_GMII_TX_EN(gmac->id);
+ break;
+ default:
+ /* We don't get here; the switch above will have errored out */
+ unreachable();
+ }
regmap_write(gmac->nss_common, NSS_COMMON_CLK_GATE, val);
if (gmac->phy_mode == PHY_INTERFACE_MODE_SGMII) {