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, 50 insertions, 10 deletions

diff --git a/arch/arm/mach-omap2/board-apollon.c b/arch/arm/mach-omap2/board-apollon.c
index 7846551f0575..a1e1e6765b5b 100644
--- a/arch/arm/mach-omap2/board-apollon.c
+++ b/arch/arm/mach-omap2/board-apollon.c
@@ -26,6 +26,8 @@
 #include <linux/interrupt.h>
 #include <linux/delay.h>
 #include <linux/leds.h>
+#include <linux/err.h>
+#include <linux/clk.h>
 
 #include <asm/hardware.h>
 #include <asm/mach-types.h>
@@ -39,7 +41,7 @@
 #include <asm/arch/board.h>
 #include <asm/arch/common.h>
 #include <asm/arch/gpmc.h>
-#include "prcm-regs.h"
+#include <asm/arch/control.h>
 
 /* LED & Switch macros */
 #define LED0_GPIO13		13
@@ -187,17 +189,47 @@ static inline void __init apollon_init_smc91x(void)
 {
 	unsigned long base;
 
+	unsigned int rate;
+	struct clk *gpmc_fck;
+	int eth_cs;
+
+	gpmc_fck = clk_get(NULL, "gpmc_fck");	/* Always on ENABLE_ON_INIT */
+	if (IS_ERR(gpmc_fck)) {
+		WARN_ON(1);
+		return;
+	}
+
+	clk_enable(gpmc_fck);
+	rate = clk_get_rate(gpmc_fck);
+
+	eth_cs = APOLLON_ETH_CS;
+
 	/* Make sure CS1 timings are correct */
-	GPMC_CONFIG1_1 = 0x00011203;
-	GPMC_CONFIG2_1 = 0x001f1f01;
-	GPMC_CONFIG3_1 = 0x00080803;
-	GPMC_CONFIG4_1 = 0x1c091c09;
-	GPMC_CONFIG5_1 = 0x041f1f1f;
-	GPMC_CONFIG6_1 = 0x000004c4;
+	gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1, 0x00011200);
+
+	if (rate >= 160000000) {
+		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f01);
+		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080803);
+		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1c0b1c0a);
+		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
+		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
+	} else if (rate >= 130000000) {
+		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
+		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
+		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
+		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
+		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
+	} else {/* rate = 100000000 */
+		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
+		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
+		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
+		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x031A1F1F);
+		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000003C2);
+	}
 
 	if (gpmc_cs_request(APOLLON_ETH_CS, SZ_16M, &base) < 0) {
 		printk(KERN_ERR "Failed to request GPMC CS for smc91x\n");
-		return;
+		goto out;
 	}
 	apollon_smc91x_resources[0].start = base + 0x300;
 	apollon_smc91x_resources[0].end   = base + 0x30f;
@@ -208,9 +240,13 @@ static inline void __init apollon_init_smc91x(void)
 		printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
 			APOLLON_ETHR_GPIO_IRQ);
 		gpmc_cs_free(APOLLON_ETH_CS);
-		return;
+		goto out;
 	}
 	omap_set_gpio_direction(APOLLON_ETHR_GPIO_IRQ, 1);
+
+out:
+	clk_disable(gpmc_fck);
+	clk_put(gpmc_fck);
 }
 
 static void __init omap_apollon_init_irq(void)
@@ -330,6 +366,8 @@ static void __init apollon_usb_init(void)
 
 static void __init omap_apollon_init(void)
 {
+	u32 v;
+
 	apollon_led_init();
 	apollon_sw_init();
 	apollon_flash_init();
@@ -339,7 +377,9 @@ static void __init omap_apollon_init(void)
 	omap_cfg_reg(W19_24XX_SYS_NIRQ);
 
 	/* Use Interal loop-back in MMC/SDIO Module Input Clock selection */
-	CONTROL_DEVCONF |= (1 << 24);
+	v = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
+	v |= (1 << 24);
+	omap_ctrl_writel(v, OMAP2_CONTROL_DEVCONF0);
 
 	/*
  	 * Make sure the serial ports are muxed on at this point.