-----Original Message----- From: Lei Wen [mailto:leiwen@marvell.com] Sent: Thursday, March 17, 2011 12:15 PM To: Heiko Schocher; Wolfgang Denk; Prafulla Wadaskar; u- boot@lists.denx.de; Marek Vasut; Ashish Karkare; Prabhanjan Sarnaik; adrian.wenl@gmail.com Subject: [PATCH V3 3/5] I2C: add i2c support for Pantheon platform
Add i2c support to dkb board with pantheon soc.
Signed-off-by: Lei Wen leiwen@marvell.com
Changelog: V3: clean code sytle issue Add i2c clock enable code include in I2C configure define block
arch/arm/cpu/arm926ejs/pantheon/cpu.c | 12 ++++++++++++ arch/arm/include/asm/arch-pantheon/cpu.h | 4 +++- arch/arm/include/asm/arch-pantheon/mfp.h | 6 ++++-- board/Marvell/dkb/dkb.c | 4 ++++ include/configs/dkb.h | 11 +++++++++++ 5 files changed, 34 insertions(+), 3 deletions(-)
diff --git a/arch/arm/cpu/arm926ejs/pantheon/cpu.c b/arch/arm/cpu/arm926ejs/pantheon/cpu.c index 9ddc77c..8b2eafa 100644 --- a/arch/arm/cpu/arm926ejs/pantheon/cpu.c +++ b/arch/arm/cpu/arm926ejs/pantheon/cpu.c @@ -59,6 +59,12 @@ int arch_cpu_init(void) /* Enable GPIO clock */ writel(APBC_APBCLK, &apbclkres->gpio);
+#ifdef CONFIG_I2C_MV
- /* Enable I2C clock */
- writel(APBC_RST | APBC_FNCLK | APBC_APBCLK, &apbclkres->twsi);
- writel(APBC_FNCLK | APBC_APBCLK, &apbclkres->twsi);
+#endif
icache_enable();
return 0;
@@ -76,3 +82,9 @@ int print_cpuinfo(void) return 0; } #endif
+#ifdef CONFIG_I2C_MV +void i2c_clk_enable(void) +{ +}
Empty function !!
+#endif diff --git a/arch/arm/include/asm/arch-pantheon/cpu.h b/arch/arm/include/asm/arch-pantheon/cpu.h index 30f4393..60955c5 100644 --- a/arch/arm/include/asm/arch-pantheon/cpu.h +++ b/arch/arm/include/asm/arch-pantheon/cpu.h @@ -50,7 +50,9 @@ struct panthapb_registers { u32 uart0; /*0x000*/ u32 uart1; /*0x004*/ u32 gpio; /*0x008*/
- u8 pad0[0x034 - 0x08 - 4];
- u8 pad0[0x02c - 0x08 - 4];
- u32 twsi; /*0x02c*/
- u8 pad1[0x034 - 0x2c - 4]; u32 timers; /*0x034*/
};
diff --git a/arch/arm/include/asm/arch-pantheon/mfp.h b/arch/arm/include/asm/arch-pantheon/mfp.h index fb291cf..e939196 100644 --- a/arch/arm/include/asm/arch-pantheon/mfp.h +++ b/arch/arm/include/asm/arch-pantheon/mfp.h @@ -32,8 +32,10 @@
- offset, pull,pF, drv,dF, edge,eF ,afn,aF
*/ /* UART2 */ -#define MFP47_UART2_RXD MFP_REG(0x198) | MFP_AF6 | MFP_DRIVE_MEDIUM -#define MFP48_UART2_TXD MFP_REG(0x19c) | MFP_AF6 | MFP_DRIVE_MEDIUM +#define MFP47_UART2_RXD (MFP_REG(0x198) | MFP_AF6 | MFP_DRIVE_MEDIUM) +#define MFP48_UART2_TXD (MFP_REG(0x19c) | MFP_AF6 | MFP_DRIVE_MEDIUM) +#define MFP53_CI2C_SCL (MFP_REG(0x1b0) | MFP_AF2 | MFP_DRIVE_MEDIUM) +#define MFP54_CI2C_SDA (MFP_REG(0x1b4) | MFP_AF2 | MFP_DRIVE_MEDIUM)
/* More macros can be defined here... */
diff --git a/board/Marvell/dkb/dkb.c b/board/Marvell/dkb/dkb.c index 72a2d2a..00f73e7 100644 --- a/board/Marvell/dkb/dkb.c +++ b/board/Marvell/dkb/dkb.c @@ -36,6 +36,10 @@ int board_early_init_f(void) MFP47_UART2_RXD, MFP48_UART2_TXD,
/* I2C */MFP53_CI2C_SCL,MFP54_CI2C_SDA,- MFP_EOC /*End of configureation*/ }; /* configure MFP's */
diff --git a/include/configs/dkb.h b/include/configs/dkb.h index 638af5e..1b18c44 100644 --- a/include/configs/dkb.h +++ b/include/configs/dkb.h @@ -56,6 +56,17 @@ #include "mv-common.h"
#undef CONFIG_ARCH_MISC_INIT
+/*
- I2C definition
- */
+#define CONFIG_CMD_I2C +#define CONFIG_I2C_MV 1 +#define CONFIG_PXA_I2C_REG 0xd4011000 +#define CONFIG_HARD_I2C 1 +#define CONFIG_SYS_I2C_SPEED 0 +#define CONFIG_SYS_I2C_SLAVE 0xfe
What about if I don't want to include this support These configuration must if ifdefed with CONFIG_CMD_I2C which will be defined in board config file.
Regards.. Prafulla . .