[PATCH 2/2] arm:omap: am33xx SRAM support (minimal)
From: Afzal Mohammed <hidden>
Date: 2012-02-10 15:37:33
Also in:
linux-omap
Subsystem:
arm port, the rest · Maintainers:
Russell King, Linus Torvalds
From: Vaibhav Bedia <redacted> Update SRAM start & size for am33xx SoC's. Note: cpu_is_34xx() is true for am33xx also. Doing cpu_is_am33xx() check after cpu_is_34xx() will not achieve what we want due to the above reason. Hence cpu_is_am33xx() is done before cpu_is_34xx() Signed-off-by: Vaibhav Bedia <redacted> Signed-off-by: Afzal Mohammed <redacted> --- arch/arm/plat-omap/include/plat/sram.h | 1 + arch/arm/plat-omap/sram.c | 14 ++++++++++++-- 2 files changed, 13 insertions(+), 2 deletions(-)
diff --git a/arch/arm/plat-omap/include/plat/sram.h b/arch/arm/plat-omap/include/plat/sram.h
index 75aa1b2..227ae26 100644
--- a/arch/arm/plat-omap/include/plat/sram.h
+++ b/arch/arm/plat-omap/include/plat/sram.h@@ -101,4 +101,5 @@ static inline void omap_push_sram_idle(void) {} #else #define OMAP4_SRAM_PA 0x40300000 #endif +#define AM33XX_SRAM_PA 0x40300000 #endif
diff --git a/arch/arm/plat-omap/sram.c b/arch/arm/plat-omap/sram.c
index 4243bdc..596f222 100644
--- a/arch/arm/plat-omap/sram.c
+++ b/arch/arm/plat-omap/sram.c@@ -86,7 +86,7 @@ static int is_sram_locked(void) __raw_writel(0xCFDE, OMAP24XX_VA_READPERM0); /* all i-read */ __raw_writel(0xCFDE, OMAP24XX_VA_WRITEPERM0); /* all i-write */ } - if (cpu_is_omap34xx()) { + if (cpu_is_omap34xx() && !cpu_is_am33xx()) { __raw_writel(0xFFFF, OMAP34XX_VA_REQINFOPERM0); /* all q-vects */ __raw_writel(0xFFFF, OMAP34XX_VA_READPERM0); /* all i-read */ __raw_writel(0xFFFF, OMAP34XX_VA_WRITEPERM0); /* all i-write */
@@ -124,7 +124,10 @@ static void __init omap_detect_sram(void) omap_sram_size = 0x800; /* 2K */ } } else { - if (cpu_is_omap34xx()) { + if (cpu_is_am33xx()) { + omap_sram_start = AM33XX_SRAM_PA; + omap_sram_size = 0x10000; /* 64K */ + } else if (cpu_is_omap34xx()) { omap_sram_start = OMAP3_SRAM_PA; omap_sram_size = 0x10000; /* 64K */ } else if (cpu_is_omap44xx()) {
@@ -368,6 +371,11 @@ static inline int omap34xx_sram_init(void) return 0; } +static inline int am33xx_sram_init(void) +{ + return 0; +} + int __init omap_sram_init(void) { omap_detect_sram();
@@ -379,6 +387,8 @@ int __init omap_sram_init(void) omap242x_sram_init(); else if (cpu_is_omap2430()) omap243x_sram_init(); + else if (cpu_is_am33xx()) + am33xx_sram_init(); else if (cpu_is_omap34xx()) omap34xx_sram_init();
--
1.7.1