ARM: OMAP2: Change 24xx to use new register access

This patch changes 24xx to use new register access, except for clock
framework. Clock framework register access will get updates in the
next patch.

Note that board-*.c files change GPMC (General Purpose Memory Controller)
access to use gpmc_cs_write_reg() instead of accessing the registers
directly. The code also uses gpmc_fck instead of it's parent clock
core_l3_ck for GPMC clock.

The H4 board file also adds h4_init_flash() function, which specify the
flash start and end addresses.

Also note that sleep.S removes some unused registers addresses.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 7 insertions, 5 deletions

diff --git a/arch/arm/mach-omap2/gpmc.c b/arch/arm/mach-omap2/gpmc.c
index 5a4cc2076a7d..02cede295e89 100644
--- a/arch/arm/mach-omap2/gpmc.c
+++ b/arch/arm/mach-omap2/gpmc.c
@@ -69,7 +69,7 @@ static void __iomem *gpmc_base =
 static void __iomem *gpmc_cs_base =
 	(void __iomem *) IO_ADDRESS(GPMC_BASE) + GPMC_CS0;
 
-static struct clk *gpmc_l3_clk;
+static struct clk *gpmc_fck;
 
 static void gpmc_write_reg(int idx, u32 val)
 {
@@ -94,11 +94,10 @@ u32 gpmc_cs_read_reg(int cs, int idx)
 	return __raw_readl(gpmc_cs_base + (cs * GPMC_CS_SIZE) + idx);
 }
 
-/* TODO: Add support for gpmc_fck to clock framework and use it */
 unsigned long gpmc_get_fclk_period(void)
 {
 	/* In picoseconds */
-	return 1000000000 / ((clk_get_rate(gpmc_l3_clk)) / 1000);
+	return 1000000000 / ((clk_get_rate(gpmc_fck)) / 1000);
 }
 
 unsigned int gpmc_ns_to_ticks(unsigned int time_ns)
@@ -398,8 +397,11 @@ void __init gpmc_init(void)
 {
 	u32 l;
 
-	gpmc_l3_clk = clk_get(NULL, "core_l3_ck");
-	BUG_ON(IS_ERR(gpmc_l3_clk));
+	gpmc_fck = clk_get(NULL, "gpmc_fck"); /* Always on ENABLE_ON_INIT */
+	if (IS_ERR(gpmc_fck))
+		WARN_ON(1);
+	else
+		clk_enable(gpmc_fck);
 
 	l = gpmc_read_reg(GPMC_REVISION);
 	printk(KERN_INFO "GPMC revision %d.%d\n", (l >> 4) & 0x0f, l & 0x0f);