[U-Boot] [PATCH] ppc/85xx: Convert MPC8572DS to using board common ICS307 code

Kumar Gala
2010-05-21T09:18:14Z

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
---
board/freescale/common/Makefile | 1 +
board/freescale/mpc8572ds/mpc8572ds.c | 145 +--------------------------------
include/configs/MPC8572DS.h | 14 +--
3 files changed, 7 insertions(+), 153 deletions(-)

diff --git a/board/freescale/common/Makefile b/board/freescale/common/Makefile
index d18445b..3498638 100644
--- a/board/freescale/common/Makefile
+++ b/board/freescale/common/Makefile
@@ -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-$(CONFIG_MPC8572DS) += ics307_clk.o
COBJS-$(CONFIG_P2020DS) += ics307_clk.o

SRCS := $(SOBJS:.o=.S) $(COBJS-y:.o=.c)
diff --git a/board/freescale/mpc8572ds/mpc8572ds.c b/board/freescale/mpc8572ds/mpc8572ds.c
index 6029a51..81d481a 100644
--- a/board/freescale/mpc8572ds/mpc8572ds.c
+++ b/board/freescale/mpc8572ds/mpc8572ds.c
@@ -1,5 +1,5 @@
/*
- * Copyright 2007-2009 Freescale Semiconductor, Inc.
+ * Copyright 2007-2010 Freescale Semiconductor, Inc.
*
* See file CREDITS for list of people who contributed to this
* project.
@@ -284,149 +284,6 @@ 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 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
-
#ifdef CONFIG_TSEC_ENET
int board_eth_init(bd_t *bis)
{
diff --git a/include/configs/MPC8572DS.h b/include/configs/MPC8572DS.h
index 78b7369..41d9662 100644
--- a/include/configs/MPC8572DS.h
+++ b/include/configs/MPC8572DS.h
@@ -1,5 +1,5 @@
/*
- * Copyright 2007-2008 Freescale Semiconductor, Inc.
+ * Copyright 2007-2008,2010 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
#endif
@@ -53,15 +55,9 @@
#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) /* ddrclk for MPC85xx */
+#define CONFIG_SYS_CLK_FREQ get_board_sys_clk() /* sysclk for MPC85xx */
+#define CONFIG_DDR_CLK_FREQ get_board_ddr_clk() /* ddrclk for MPC85xx */
#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.
--
1.6.0.6