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DaVinci: correct MDSTAT.STATE mask

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MDSTAT.STATE occupies bits 0..5 according to all available documentation, so fix
the mask which previously was leaving out the intermediate state indicator bit.

While at it, introduce two #define's for that mask -- unfortunately, we can't
use a single #define as the assembly code can't include <asm/arch/hardware.h>
due to C-specfic constructs in it.

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
This commit is contained in:
Sergei Shtylyov 2011-09-23 04:29:15 +00:00 • committed by Albert ARIBAUD
parent 53430a4f25
commit 9e2538e11f
3 changed files with 9 additions and 5 deletions
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8
arch/arm/cpu/arm926ejs/davinci/lowlevel_init.S
View file

@ -45,6 +45,8 @@
#include <config.h>
#define MDSTAT_STATE 0x3f
.globl lowlevel_init
lowlevel_init:
@ -268,7 +270,7 @@ checkStatClkStop:
checkDDRStatClkStop:
ldr r6, MDSTAT_DDR2
ldr r7, [r6]
and r7, r7, $0x1f
and r7, r7, $MDSTAT_STATE
cmp r7, $0x03
bne checkDDRStatClkStop
@ -343,7 +345,7 @@ checkStatClkStop2:
checkDDRStatClkStop2:
ldr r6, MDSTAT_DDR2
ldr r7, [r6]
and r7, r7, $0x1f
and r7, r7, $MDSTAT_STATE
cmp r7, $0x01
bne checkDDRStatClkStop2
@ -374,7 +376,7 @@ checkStatClkEn2:
checkDDRStatClkEn2:
ldr r6, MDSTAT_DDR2
ldr r7, [r6]
and r7, r7, $0x1f
and r7, r7, $MDSTAT_STATE
cmp r7, $0x03
bne checkDDRStatClkEn2

4
arch/arm/cpu/arm926ejs/davinci/psc.c
View file

@ -83,7 +83,7 @@ void lpsc_on(unsigned int id)
while (readl(ptstat) & 0x01)
continue;
if ((readl(mdstat) & 0x1f) == 0x03)
if ((readl(mdstat) & PSC_MDSTAT_STATE) == 0x03)
return; /* Already on and enabled */
writel(readl(mdctl) | 0x03, mdctl);
@ -114,7 +114,7 @@ void lpsc_on(unsigned int id)
while (readl(ptstat) & 0x01)
continue;
while ((readl(mdstat) & 0x1f) != 0x03)
while ((readl(mdstat) & PSC_MDSTAT_STATE) != 0x03)
continue;
}

2
arch/arm/include/asm/arch-davinci/hardware.h
View file

@ -356,6 +356,8 @@ struct davinci_psc_regs {
#endif /* CONFIG_SOC_DA8XX */
#define PSC_MDSTAT_STATE 0x3f
#ifndef CONFIG_SOC_DA8XX
/* Miscellania... */