From 0510c8a014432b45f09509d1fb450922ec96b40d Mon Sep 17 00:00:00 2001 From: Valentin Longchamp Date: Tue, 4 Sep 2012 11:55:02 +0200 Subject: ARM: initial DTS support for km_kirkwood This is a first attempt to support the km_kirkwood reference design with a device tree. This km_kirkwood design is present in many Keymile products. It is based on the Marvell Bobcat SOC which integrates a Kirkwood CPU next to a big L2 Ethernet Switch. The Kirkwood in the SOC is very similar to the "normal" one, but there are a few differences. This initial support is minimal: the kernel can boot with network (ge0), serial port and NAND functional. Signed-off-by: Valentin Longchamp Cc: Holger Brunck Acked-by: Andrew Lunn Signed-off-by: Jason Cooper --- arch/arm/mach-kirkwood/board-km_kirkwood.c | 57 ++++++++++++++++++++++++++++++ 1 file changed, 57 insertions(+) create mode 100644 arch/arm/mach-kirkwood/board-km_kirkwood.c (limited to 'arch/arm/mach-kirkwood/board-km_kirkwood.c') diff --git a/arch/arm/mach-kirkwood/board-km_kirkwood.c b/arch/arm/mach-kirkwood/board-km_kirkwood.c new file mode 100644 index 000000000000..f7d32834b757 --- /dev/null +++ b/arch/arm/mach-kirkwood/board-km_kirkwood.c @@ -0,0 +1,57 @@ +/* + * Copyright 2012 2012 KEYMILE AG, CH-3097 Bern + * Valentin Longchamp + * + * arch/arm/mach-kirkwood/board-km_kirkwood.c + * + * Keymile km_kirkwood Reference Desing Init for drivers not converted to + * flattened device tree yet. + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + */ + +#include +#include +#include +#include +#include +#include "common.h" +#include "mpp.h" + +static struct mv643xx_eth_platform_data km_kirkwood_ge00_data = { + .phy_addr = MV643XX_ETH_PHY_ADDR(0), +}; + +static unsigned int km_kirkwood_mpp_config[] __initdata = { + MPP8_GPIO, /* I2C SDA */ + MPP9_GPIO, /* I2C SCL */ + 0 +}; + +void __init km_kirkwood_init(void) +{ + struct clk *sata_clk; + /* + * Basic setup. Needs to be called early. + */ + kirkwood_mpp_conf(km_kirkwood_mpp_config); + + /* + * Our variant of kirkwood (integrated in the Bobcat) hangs on accessing + * SATA bits (14-15) of the Clock Gating Control Register. Since these + * devices are also not present in this variant, their clocks get + * disabled because unused when clk_disable_unused() gets called. + * That's why we change the flags to these clocks to CLK_IGNORE_UNUSED + */ + sata_clk = clk_get_sys("sata_mv.0", "0"); + if (!IS_ERR(sata_clk)) + sata_clk->flags |= CLK_IGNORE_UNUSED; + sata_clk = clk_get_sys("sata_mv.0", "1"); + if (!IS_ERR(sata_clk)) + sata_clk->flags |= CLK_IGNORE_UNUSED; + + kirkwood_ehci_init(); + kirkwood_ge00_init(&km_kirkwood_ge00_data); +} -- cgit v1.2.3