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net: dsa: lantiq_gswip: add vendor property to setup MII refclk output

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Read boolean Device Tree property "maxlinear,rmii-refclk-out" and switch
the RMII reference clock to be a clock output rather than an input if it
is set.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Reviewed-by: Alexander Sverdlin <alexander.sverdlin@siemens.com>
Tested-by: Alexander Sverdlin <alexander.sverdlin@siemens.com>
Link: https://patch.msgid.link/947d14970f74f760e4a60c777aabee64e7e4f356.1762170107.git.daniel@makrotopia.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Daniel Golle 2025-11-03 12:19:47 +00:00 committed by Jakub Kicinski
parent e836824116
commit 319fd7e9d4
1 changed files with 2 additions and 0 deletions
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2
drivers/net/dsa/lantiq/lantiq_gswip_common.c
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@ -1402,6 +1402,8 @@ static void gswip_phylink_mac_config(struct phylink_config *config,
break;
case PHY_INTERFACE_MODE_RMII:
miicfg |= GSWIP_MII_CFG_MODE_RMIIM;
if (of_property_read_bool(dp->dn, "maxlinear,rmii-refclk-out"))
miicfg |= GSWIP_MII_CFG_RMII_CLK;
break;
case PHY_INTERFACE_MODE_RGMII:
case PHY_INTERFACE_MODE_RGMII_ID: