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board-km_kirkwood.c
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1 /*
2  * Copyright 2012 2012 KEYMILE AG, CH-3097 Bern
3  * Valentin Longchamp <[email protected]>
4  *
5  * arch/arm/mach-kirkwood/board-km_kirkwood.c
6  *
7  * Keymile km_kirkwood Reference Desing Init for drivers not converted to
8  * flattened device tree yet.
9  *
10  * This file is licensed under the terms of the GNU General Public
11  * License version 2. This program is licensed "as is" without any
12  * warranty of any kind, whether express or implied.
13  */
14 
15 #include <linux/kernel.h>
16 #include <linux/init.h>
17 #include <linux/mv643xx_eth.h>
18 #include <linux/clk.h>
19 #include <linux/clk-private.h>
20 #include "common.h"
21 #include "mpp.h"
22 
23 static struct mv643xx_eth_platform_data km_kirkwood_ge00_data = {
24  .phy_addr = MV643XX_ETH_PHY_ADDR(0),
25 };
26 
27 static unsigned int km_kirkwood_mpp_config[] __initdata = {
28  MPP8_GPIO, /* I2C SDA */
29  MPP9_GPIO, /* I2C SCL */
30  0
31 };
32 
34 {
35  struct clk *sata_clk;
36  /*
37  * Basic setup. Needs to be called early.
38  */
39  kirkwood_mpp_conf(km_kirkwood_mpp_config);
40 
41  /*
42  * Our variant of kirkwood (integrated in the Bobcat) hangs on accessing
43  * SATA bits (14-15) of the Clock Gating Control Register. Since these
44  * devices are also not present in this variant, their clocks get
45  * disabled because unused when clk_disable_unused() gets called.
46  * That's why we change the flags to these clocks to CLK_IGNORE_UNUSED
47  */
48  sata_clk = clk_get_sys("sata_mv.0", "0");
49  if (!IS_ERR(sata_clk))
50  sata_clk->flags |= CLK_IGNORE_UNUSED;
51  sata_clk = clk_get_sys("sata_mv.0", "1");
52  if (!IS_ERR(sata_clk))
53  sata_clk->flags |= CLK_IGNORE_UNUSED;
54 
56  kirkwood_ge00_init(&km_kirkwood_ge00_data);
57 }