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ppc/85xx: Fix LCRR_CLKDIV defines

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For some reason the CLKDIV field varies between SoC in how it interprets
the bit values.

All 83xx and early (e500v1) PQ3 devices support:
 clk/2: CLKDIV = 2
 clk/4: CLKDIV = 4
 clk/8: CLKDIV = 8

Newer PQ3 (e500v2) and MPC86xx support:
 clk/4: CLKDIV = 2
 clk/8: CLKDIV = 4
 clk/16: CLKDIV = 8

Ensure that the MPC86xx and MPC85xx still get the same behavior and make
the defines reflect their logical view (not the value of the field).

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Acked-by: Peter Tyser <ptyser@xes-inc.com>
This commit is contained in:
Kumar Gala 2009-09-15 22:21:58 -05:00
parent 30d7aae7e8
commit 202d94875c
4 changed files with 11 additions and 3 deletions
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8
include/asm-ppc/fsl_lbc.h
View file

@ -311,9 +311,17 @@
*/
#define LCRR_CLKDIV 0x0000001F
#define LCRR_CLKDIV_SHIFT 0
#if defined(CONFIG_MPC83xx) || defined (CONFIG_MPC8540) || \
defined(CONFIG_MPC8541) || defined (CONFIG_MPC8555) || \
defined(CONFIG_MPC8560)
#define LCRR_CLKDIV_2 0x00000002
#define LCRR_CLKDIV_4 0x00000004
#define LCRR_CLKDIV_8 0x00000008
#else
#define LCRR_CLKDIV_4 0x00000002
#define LCRR_CLKDIV_8 0x00000004
#define LCRR_CLKDIV_16 0x00000008
#endif
/* LTEDR - Transfer Error Check Disable Register
*/

2
include/configs/XPEDITE5170.h
View file

@ -122,7 +122,7 @@ extern unsigned long get_board_sys_clk(unsigned long dummy);
* 0xf800_0000 0xffff_ffff NOR Flash 1 128M non-cacheable
*/
#define CONFIG_SYS_LBC_LCRR (LCRR_CLKDIV_2 | LCRR_EADC_3)
#define CONFIG_SYS_LBC_LCRR (LCRR_CLKDIV_4 | LCRR_EADC_3)
/*
* NAND flash configuration

2
include/configs/XPEDITE5200.h
View file

@ -103,7 +103,7 @@
* 0xfc00_0000 0xffff_ffff NOR Flash 1 64M non-cacheable
*/
#define CONFIG_SYS_LBC_LCRR (LCRR_CLKDIV_4 | LCRR_EADC_3)
#define CONFIG_SYS_LBC_LCRR (LCRR_CLKDIV_8 | LCRR_EADC_3)
/*
* NAND flash configuration

2
include/configs/XPEDITE5370.h
View file

@ -116,7 +116,7 @@ extern unsigned long get_board_ddr_clk(unsigned long dummy);
* 0xf800_0000 0xffff_ffff NOR Flash 1 128M non-cacheable
*/
#define CONFIG_SYS_LBC_LCRR (LCRR_CLKDIV_4 | LCRR_EADC_3)
#define CONFIG_SYS_LBC_LCRR (LCRR_CLKDIV_8 | LCRR_EADC_3)
/*
* NAND flash configuration