From 1a791892dcb5904c8b208535704714b07802e0b8 Mon Sep 17 00:00:00 2001 From: Vladimir Zapolskiy Date: Mon, 6 Jul 2015 07:22:11 +0300 Subject: net: lpc32xx: add RMII phy mode support LPC32xx MAC and clock control configuration requires some minor quirks to deal with a phy connected by RMII. It's worth to mention that the kernel and legacy BSP from NXP sets SUPP_RESET_RMII == (1 << 11) bit, however the description of this bit is missing in shared LPC32x0 User Manual UM10326 Rev. 3, July 22, 2011 and in LPC32x0 Draft User Mannual Rev. 00.27, November 20, 2008, also in my tests an SMSC LAN8700 phy device connected over RMII seems to work correctly without touching this bit. Add support of RMII, if CONFIG_RMII is defined, this option is aligned with a number of boards, which already define the same config value. Signed-off-by: Vladimir Zapolskiy Tested-by: Sylvain Lemieux --- arch/arm/cpu/arm926ejs/lpc32xx/devices.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'arch/arm/cpu') diff --git a/arch/arm/cpu/arm926ejs/lpc32xx/devices.c b/arch/arm/cpu/arm926ejs/lpc32xx/devices.c index 5a453e303d..9c8d65560a 100644 --- a/arch/arm/cpu/arm926ejs/lpc32xx/devices.c +++ b/arch/arm/cpu/arm926ejs/lpc32xx/devices.c @@ -45,7 +45,12 @@ void lpc32xx_mac_init(void) { /* Enable MAC interface */ writel(CLK_MAC_REG | CLK_MAC_SLAVE | CLK_MAC_MASTER - | CLK_MAC_MII, &clk->macclk_ctrl); +#if defined(CONFIG_RMII) + | CLK_MAC_RMII, +#else + | CLK_MAC_MII, +#endif + &clk->macclk_ctrl); } void lpc32xx_mlc_nand_init(void) -- cgit v1.2.1