From mboxrd@z Thu Jan 1 00:00:00 1970 From: Heiko Schocher Date: Mon, 02 Nov 2009 08:07:01 +0100 Subject: [U-Boot] [u-boot] [PATCH][1/2] mx27: Add necessary defines and helper functions to support I2C in i.MX27. In-Reply-To: <4AEAFB88.1030707@vista-silicon.com> References: <4AEAFB88.1030707@vista-silicon.com> Message-ID: <4AEE8515.5020001@denx.de> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Hello Javier, Javier Martin wrote: > Add proper register definitions, macros and clock functions required > for I2C driver to be developed. > > > > Signed-off-by: Javier Martin > -- > diff --git a/cpu/arm926ejs/mx27/generic.c b/cpu/arm926ejs/mx27/generic.c > index 808371f..540ef0c 100644 [...] > diff --git a/include/asm-arm/arch-mx27/imx-regs.h b/include/asm-arm/arch-mx27/imx-regs.h > index d36a6da..2b89b4e 100644 > --- a/include/asm-arm/arch-mx27/imx-regs.h > +++ b/include/asm-arm/arch-mx27/imx-regs.h > @@ -206,6 +206,10 @@ struct iim_regs { > }; > #endif > > +#define __REG(x) (*((volatile u32 *)(x))) > +#define __REG16(x) (*((volatile u16 *)(x))) > +#define __REG8(x) (*((volatile u8 *)(x))) > + Why you need this? Couldn;t you use io accessor from asm/io.h? bye, Heiko -- DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany