[PATCH 1/9] ARM i.MX5: prepare to add a imx51_lowlevel_init
Sascha Hauer
s.hauer at pengutronix.de
Sat Dec 17 09:52:01 EST 2011
- move code which can be shared between i.MX53 and i.MX51
to a common file
- rename mx53_init_lowlevel to imx53_init_lowlevel
Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
---
arch/arm/boards/freescale-mx53-loco/board.c | 2 +-
arch/arm/boards/freescale-mx53-smd/board.c | 2 +-
arch/arm/mach-imx/Makefile | 4 +-
arch/arm/mach-imx/imx53.c | 61 +++-----------------------
arch/arm/mach-imx/include/mach/imx5.h | 8 ++++
arch/arm/mach-imx/include/mach/imx53.h | 6 ---
6 files changed, 19 insertions(+), 64 deletions(-)
create mode 100644 arch/arm/mach-imx/include/mach/imx5.h
delete mode 100644 arch/arm/mach-imx/include/mach/imx53.h
diff --git a/arch/arm/boards/freescale-mx53-loco/board.c b/arch/arm/boards/freescale-mx53-loco/board.c
index aec2254..8d1cbf5 100644
--- a/arch/arm/boards/freescale-mx53-loco/board.c
+++ b/arch/arm/boards/freescale-mx53-loco/board.c
@@ -34,7 +34,7 @@
#include <mach/gpio.h>
#include <mach/imx-nand.h>
#include <mach/iim.h>
-#include <mach/imx53.h>
+#include <mach/imx5.h>
#include <asm/armlinux.h>
#include <io.h>
diff --git a/arch/arm/boards/freescale-mx53-smd/board.c b/arch/arm/boards/freescale-mx53-smd/board.c
index 325458e..d14c1f2 100644
--- a/arch/arm/boards/freescale-mx53-smd/board.c
+++ b/arch/arm/boards/freescale-mx53-smd/board.c
@@ -34,7 +34,7 @@
#include <mach/gpio.h>
#include <mach/imx-nand.h>
#include <mach/iim.h>
-#include <mach/imx53.h>
+#include <mach/imx5.h>
#include <asm/armlinux.h>
#include <io.h>
diff --git a/arch/arm/mach-imx/Makefile b/arch/arm/mach-imx/Makefile
index 0b3b781..a9aa9e2 100644
--- a/arch/arm/mach-imx/Makefile
+++ b/arch/arm/mach-imx/Makefile
@@ -5,8 +5,8 @@ obj-$(CONFIG_ARCH_IMX21) += speed-imx21.o imx21.o iomux-v1.o
obj-$(CONFIG_ARCH_IMX27) += speed-imx27.o imx27.o iomux-v1.o
obj-$(CONFIG_ARCH_IMX31) += speed-imx31.o imx31.o iomux-v2.o
obj-$(CONFIG_ARCH_IMX35) += speed-imx35.o imx35.o iomux-v3.o
-obj-$(CONFIG_ARCH_IMX51) += speed-imx51.o imx51.o iomux-v3.o
-obj-$(CONFIG_ARCH_IMX53) += speed-imx53.o imx53.o iomux-v3.o
+obj-$(CONFIG_ARCH_IMX51) += speed-imx51.o imx51.o iomux-v3.o imx5.o
+obj-$(CONFIG_ARCH_IMX53) += speed-imx53.o imx53.o iomux-v3.o imx5.o
obj-$(CONFIG_IMX_CLKO) += clko.o
obj-$(CONFIG_IMX_IIM) += iim.o
obj-$(CONFIG_NAND_IMX) += nand.o
diff --git a/arch/arm/mach-imx/imx53.c b/arch/arm/mach-imx/imx53.c
index 64bec86..2fb18e7 100644
--- a/arch/arm/mach-imx/imx53.c
+++ b/arch/arm/mach-imx/imx53.c
@@ -19,6 +19,7 @@
#include <common.h>
#include <io.h>
#include <sizes.h>
+#include <mach/imx5.h>
#include <mach/imx53-regs.h>
#include <mach/clock-imx51_53.h>
@@ -45,63 +46,17 @@ static int imx53_init(void)
}
coredevice_initcall(imx53_init);
-static void setup_pll(void __iomem *base, int freq, u32 op, u32 mfd, u32 mfn)
-{
- u32 r;
-
- /*
- * If freq < 300MHz, we need to set dpdck0_2_en to 0
- */
- r = 0x00000232;
- if (freq >= 300)
- r |= 0x1000;
-
- writel(r, base + MX5_PLL_DP_CTL);
-
- writel(0x2, base + MX5_PLL_DP_CONFIG);
-
- writel(op, base + MX5_PLL_DP_OP);
- writel(op, base + MX5_PLL_DP_HFS_OP);
-
- writel(mfd, base + MX5_PLL_DP_MFD);
- writel(mfd, base + MX5_PLL_DP_HFS_MFD);
-
- writel(mfn, base + MX5_PLL_DP_MFN);
- writel(mfn, base + MX5_PLL_DP_HFS_MFN);
+#define setup_pll_1000(base) imx5_setup_pll((base), 1000, ((10 << 4) + ((1 - 1) << 0)), (12 - 1), 5)
+#define setup_pll_400(base) imx5_setup_pll((base), 400, ((8 << 4) + ((2 - 1) << 0)), (3 - 1), 1)
+#define setup_pll_455(base) imx5_setup_pll((base), 455, ((9 << 4) + ((2 - 1) << 0)), (48 - 1), 23)
+#define setup_pll_216(base) imx5_setup_pll((base), 216, ((8 << 4) + ((2 - 1) << 0)), (1 - 1), 1)
- writel(0x00001232, base + MX5_PLL_DP_CTL);
-
- while (!(readl(base + MX5_PLL_DP_CTL) & 1));
-}
-
-#define setup_pll_1000(base) setup_pll((base), 1000, ((10 << 4) + ((1 - 1) << 0)), (12 - 1), 5)
-#define setup_pll_400(base) setup_pll((base), 400, ((8 << 4) + ((2 - 1) << 0)), (3 - 1), 1)
-#define setup_pll_455(base) setup_pll((base), 455, ((9 << 4) + ((2 - 1) << 0)), (48 - 1), 23)
-#define setup_pll_216(base) setup_pll((base), 216, ((8 << 4) + ((2 - 1) << 0)), (1 - 1), 1)
-
-int mx53_init_lowlevel(void)
+void imx53_init_lowlevel(void)
{
void __iomem *ccm = (void __iomem *)MX53_CCM_BASE_ADDR;
u32 r;
- /* ARM errata ID #468414 */
- __asm__ __volatile__("mrc 15, 0, %0, c1, c0, 1":"=r"(r));
- r |= (1 << 5); /* enable L1NEON bit */
- r &= ~(1 << 1); /* explicitly disable L2 cache */
- __asm__ __volatile__("mcr 15, 0, %0, c1, c0, 1" : : "r"(r));
-
- /* reconfigure L2 cache aux control reg */
- r = 0xc0 | /* tag RAM */
- 0x4 | /* data RAM */
- (1 << 24) | /* disable write allocate delay */
- (1 << 23) | /* disable write allocate combine */
- (1 << 22); /* disable write allocate */
-
- __asm__ __volatile__("mcr 15, 1, %0, c9, c0, 2" : : "r"(r));
-
- __asm__ __volatile__("mrc 15, 0, %0, c1, c0, 1":"=r"(r));
- r |= 1 << 1; /* enable L2 cache */
- __asm__ __volatile__("mcr 15, 0, %0, c1, c0, 1" : : "r"(r));
+ imx5_init_lowlevel();
/*
* AIPS setup - Only setup MPROTx registers.
@@ -195,6 +150,4 @@ int mx53_init_lowlevel(void)
writel(0xffffffff, ccm + MX53_CCM_CCGR7);
writel(0, ccm + MX5_CCM_CCDR);
-
- return 0;
}
diff --git a/arch/arm/mach-imx/include/mach/imx5.h b/arch/arm/mach-imx/include/mach/imx5.h
new file mode 100644
index 0000000..d034082
--- /dev/null
+++ b/arch/arm/mach-imx/include/mach/imx5.h
@@ -0,0 +1,8 @@
+#ifndef __MACH_MX5_H
+#define __MACH_MX5_H
+
+void imx53_init_lowlevel(void);
+void imx5_setup_pll(void __iomem *base, int freq, u32 op, u32 mfd, u32 mfn);
+void imx5_init_lowlevel(void);
+
+#endif /* __MACH_MX53_H */
diff --git a/arch/arm/mach-imx/include/mach/imx53.h b/arch/arm/mach-imx/include/mach/imx53.h
deleted file mode 100644
index b1f30d3..0000000
--- a/arch/arm/mach-imx/include/mach/imx53.h
+++ /dev/null
@@ -1,6 +0,0 @@
-#ifndef __MACH_MX53_H
-#define __MACH_MX53_H
-
-int mx53_init_lowlevel(void);
-
-#endif /* __MACH_MX53_H */
--
1.7.7.3
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