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ppc/85xx: Convert MPC8536DS to using board common ICS307 code

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Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
master
Kumar Gala 15 years ago
parent 509c4c4ce2
commit c7e1a43de6
3 changed files with 6 additions and 157 deletions
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  1. 1
      board/freescale/common/Makefile
  2. 148
      board/freescale/mpc8536ds/mpc8536ds.c
  3. 14
      include/configs/MPC8536DS.h

1
board/freescale/common/Makefile
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@ -42,6 +42,7 @@ COBJS-$(CONFIG_MPC8541CDS) += cds_pci_ft.o
COBJS-$(CONFIG_MPC8548CDS) += cds_pci_ft.o
COBJS-$(CONFIG_MPC8555CDS) += cds_pci_ft.o
COBJS-$(CONFIG_MPC8536DS) += ics307_clk.o
COBJS-$(CONFIG_MPC8572DS) += ics307_clk.o
COBJS-$(CONFIG_P1022DS) += ics307_clk.o
COBJS-$(CONFIG_P2020DS) += ics307_clk.o

148
board/freescale/mpc8536ds/mpc8536ds.c
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@ -350,154 +350,6 @@ int board_early_init_r(void)
return 0;
}
#ifdef CONFIG_GET_CLK_FROM_ICS307
/* decode S[0-2] to Output Divider (OD) */
static unsigned char
ics307_S_to_OD[] = {
10, 2, 8, 4, 5, 7, 3, 6
};
/* Calculate frequency being generated by ICS307-02 clock chip based upon
* the control bytes being programmed into it. */
/* XXX: This function should probably go into a common library */
static unsigned long
ics307_clk_freq (unsigned char cw0, unsigned char cw1, unsigned char cw2)
{
const unsigned long long InputFrequency = CONFIG_ICS307_REFCLK_HZ;
unsigned long VDW = ((cw1 << 1) & 0x1FE) + ((cw2 >> 7) & 1);
unsigned long RDW = cw2 & 0x7F;
unsigned long OD = ics307_S_to_OD[cw0 & 0x7];
unsigned long freq;
/* CLK1Frequency = InputFrequency * 2 * (VDW + 8) / ((RDW + 2) * OD) */
/* cw0: C1 C0 TTL F1 F0 S2 S1 S0
* cw1: V8 V7 V6 V5 V4 V3 V2 V1
* cw2: V0 R6 R5 R4 R3 R2 R1 R0
*
* R6:R0 = Reference Divider Word (RDW)
* V8:V0 = VCO Divider Word (VDW)
* S2:S0 = Output Divider Select (OD)
* F1:F0 = Function of CLK2 Output
* TTL = duty cycle
* C1:C0 = internal load capacitance for cyrstal
*/
/* Adding 1 to get a "nicely" rounded number, but this needs
* more tweaking to get a "properly" rounded number. */
freq = 1 + (InputFrequency * 2 * (VDW + 8) / ((RDW + 2) * OD));
debug("ICS307: CW[0-2]: %02X %02X %02X => %u Hz\n", cw0, cw1, cw2,
freq);
return freq;
}
unsigned long
get_board_sys_clk(ulong dummy)
{
u8 *pixis_base = (u8 *)PIXIS_BASE;
return ics307_clk_freq (
in_8(pixis_base + PIXIS_VSYSCLK0),
in_8(pixis_base + PIXIS_VSYSCLK1),
in_8(pixis_base + PIXIS_VSYSCLK2)
);
}
unsigned long
get_board_ddr_clk(ulong dummy)
{
u8 *pixis_base = (u8 *)PIXIS_BASE;
return ics307_clk_freq (
in_8(pixis_base + PIXIS_VDDRCLK0),
in_8(pixis_base + PIXIS_VDDRCLK1),
in_8(pixis_base + PIXIS_VDDRCLK2)
);
}
#else
unsigned long
get_board_sys_clk(ulong dummy)
{
u8 i;
ulong val = 0;
u8 *pixis_base = (u8 *)PIXIS_BASE;
i = in_8(pixis_base + PIXIS_SPD);
i &= 0x07;
switch (i) {
case 0:
val = 33333333;
break;
case 1:
val = 40000000;
break;
case 2:
val = 50000000;
break;
case 3:
val = 66666666;
break;
case 4:
val = 83333333;
break;
case 5:
val = 100000000;
break;
case 6:
val = 133333333;
break;
case 7:
val = 166666666;
break;
}
return val;
}
unsigned long
get_board_ddr_clk(ulong dummy)
{
u8 i;
ulong val = 0;
u8 *pixis_base = (u8 *)PIXIS_BASE;
i = in_8(pixis_base + PIXIS_SPD);
i &= 0x38;
i >>= 3;
switch (i) {
case 0:
val = 33333333;
break;
case 1:
val = 40000000;
break;
case 2:
val = 50000000;
break;
case 3:
val = 66666666;
break;
case 4:
val = 83333333;
break;
case 5:
val = 100000000;
break;
case 6:
val = 133333333;
break;
case 7:
val = 166666666;
break;
}
return val;
}
#endif
int board_eth_init(bd_t *bis)
{
#ifdef CONFIG_TSEC_ENET

14
include/configs/MPC8536DS.h
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@ -1,5 +1,5 @@
/*
* Copyright 2008-2009 Freescale Semiconductor, Inc.
* Copyright 2007-2009,2010 Freescale Semiconductor, Inc.
*
* See file CREDITS for list of people who contributed to this
* project.
@ -27,6 +27,8 @@
#ifndef __CONFIG_H
#define __CONFIG_H
#include "../board/freescale/common/ics307_clk.h"
#ifdef CONFIG_MK_36BIT
#define CONFIG_PHYS_64BIT 1
#endif
@ -70,15 +72,9 @@
#define CONFIG_TSEC_ENET /* tsec ethernet support */
#define CONFIG_ENV_OVERWRITE
#ifndef __ASSEMBLY__
extern unsigned long get_board_sys_clk(unsigned long dummy);
extern unsigned long get_board_ddr_clk(unsigned long dummy);
#endif
#define CONFIG_SYS_CLK_FREQ get_board_sys_clk(0) /* sysclk for MPC85xx */
#define CONFIG_DDR_CLK_FREQ get_board_ddr_clk(0)
#define CONFIG_SYS_CLK_FREQ get_board_sys_clk() /* sysclk for MPC85xx */
#define CONFIG_DDR_CLK_FREQ get_board_ddr_clk()
#define CONFIG_ICS307_REFCLK_HZ 33333000 /* ICS307 clock chip ref freq */
#define CONFIG_GET_CLK_FROM_ICS307 /* decode sysclk and ddrclk freq
from ICS307 instead of switches */
/*
* These can be toggled for performance analysis, otherwise use default.

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