3 * BRIEF MODULE DESCRIPTION
4 * Alchemy Pb1200/Db1200 board setup.
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2 of the License, or (at your
9 * option) any later version.
11 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
12 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
14 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
15 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
16 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
17 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
18 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
19 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
20 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
22 * You should have received a copy of the GNU General Public License along
23 * with this program; if not, write to the Free Software Foundation, Inc.,
24 * 675 Mass Ave, Cambridge, MA 02139, USA.
27 #include <linux/init.h>
28 #include <linux/sched.h>
33 extern void _board_init_irq(void);
34 extern void (*board_init_irq)(void);
36 void board_reset(void)
42 void __init board_setup(void)
51 * Enable PSC1 SYNC for AC97. Normaly done in audio driver,
52 * but it is board specific code, so put it here.
54 pin_func = au_readl(SYS_PINFUNC);
56 pin_func |= SYS_PF_MUST_BE_SET | SYS_PF_PSC1_S1;
57 au_writel(pin_func, SYS_PINFUNC);
59 au_writel(0, (u32)bcsr | 0x10); /* turn off PCMCIA power */
64 #if defined(CONFIG_I2C_AU1550)
69 /* Select SMBus in CPLD */
70 bcsr->resets &= ~BCSR_RESETS_PCS0MUX;
72 pin_func = au_readl(SYS_PINFUNC);
74 pin_func &= ~(SYS_PINFUNC_P0A | SYS_PINFUNC_P0B);
75 /* Set GPIOs correctly */
77 au_writel(pin_func, SYS_PINFUNC);
80 /* The I2C driver depends on 50 MHz clock */
81 freq0 = au_readl(SYS_FREQCTRL0);
83 freq0 &= ~(SYS_FC_FRDIV1_MASK | SYS_FC_FS1 | SYS_FC_FE1);
84 freq0 |= 3 << SYS_FC_FRDIV1_BIT;
85 /* 396 MHz / (3 + 1) * 2 == 49.5 MHz */
86 au_writel(freq0, SYS_FREQCTRL0);
89 au_writel(freq0, SYS_FREQCTRL0);
92 clksrc = au_readl(SYS_CLKSRC);
94 clksrc &= ~(SYS_CS_CE0 | SYS_CS_DE0 | SYS_CS_ME0_MASK);
95 /* Bit 22 is EXTCLK0 for PSC0 */
96 clksrc |= SYS_CS_MUX_FQ1 << SYS_CS_ME0_BIT;
97 au_writel(clksrc, SYS_CLKSRC);
102 #ifdef CONFIG_FB_AU1200
103 argptr = prom_getcmdline();
104 #ifdef CONFIG_MIPS_PB1200
105 strcat(argptr, " video=au1200fb:panel:bs");
107 #ifdef CONFIG_MIPS_DB1200
108 strcat(argptr, " video=au1200fb:panel:bs");
113 * The Pb1200 development board uses external MUX for PSC0 to
114 * support SMB/SPI. bcsr->resets bit 12: 0=SMB 1=SPI
116 #ifdef CONFIG_I2C_AU1550
117 bcsr->resets &= ~BCSR_RESETS_PCS0MUX;
121 #ifdef CONFIG_MIPS_PB1200
122 printk(KERN_INFO "AMD Alchemy Pb1200 Board\n");
124 #ifdef CONFIG_MIPS_DB1200
125 printk(KERN_INFO "AMD Alchemy Db1200 Board\n");
128 /* Setup Pb1200 External Interrupt Controller */
129 board_init_irq = _board_init_irq;
132 int board_au1200fb_panel(void)
134 BCSR *bcsr = (BCSR *)BCSR_KSEG1_ADDR;
143 int board_au1200fb_panel_init(void)
146 BCSR *bcsr = (BCSR *)BCSR_KSEG1_ADDR;
148 bcsr->board |= BCSR_BOARD_LCDVEE | BCSR_BOARD_LCDVDD | BCSR_BOARD_LCDBL;
149 /* printk(KERN_DEBUG "board_au1200fb_panel_init()\n"); */
153 int board_au1200fb_panel_shutdown(void)
156 BCSR *bcsr = (BCSR *)BCSR_KSEG1_ADDR;
158 bcsr->board &= ~(BCSR_BOARD_LCDVEE | BCSR_BOARD_LCDVDD |
160 /* printk(KERN_DEBUG "board_au1200fb_panel_shutdown()\n"); */