From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kenneth Johansson Date: Mon, 30 Jun 2008 13:54:33 +0200 Subject: [U-Boot-Users] Fw: Does U-boot support ethernet chip LAN9210 from SMSC? In-Reply-To: <02d401c8da9b$20600990$b301a8c0@server> References: <02d401c8da9b$20600990$b301a8c0@server> Message-ID: <1214826873.29762.28.camel@localhost.localdomain> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On Mon, 2008-06-30 at 19:21 +0900, ??? wrote: > Hi Ben, > > The below is the part of smsc911x.c. > > In reg_read(), line 5 shows "(*(addr_16 + 1) << 16));", which add 1 to addr_16. > In reg_write(), line 10 shows *(volatile u16*)(addr + 2) = (u16)(val >> 16);, which add 2 to addr. > > I don't understand this. Can you explain to me why address offset differs? > The type of addr and addr_16 is not the same. one is a pointer and one is a number. > 1. #elif CONFIG_DRIVER_SMC911X_16_BIT > 2. static inline u32 reg_read(u32 addr) > 3. { > 4. volatile u16 *addr_16 = (u16 *)addr; > 5. return ((*addr_16 & 0x0000ffff) | (*(addr_16 + 1) << 16)); > 6. } > 7. static inline void reg_write(u32 addr, u32 val) > 8.{ > 9. *(volatile u16*)addr = (u16)val; > 10. *(volatile u16*)(addr + 2) = (u16)(val >> 16); > 11. } > 12. #else > > Best Regards, > Seung Youl. > > ----- Original Message ----- > From: "???" > To: "Ben Warren" > Cc: > Sent: Monday, June 30, 2008 3:02 PM > Subject: Re: [U-Boot-Users] Does U-boot support ethernet chip LAN9210 from SMSC? > > > > Hi Ben, > > > > I have found smc911x.c source code in which both 16 and 32 bit access are supported. > > I will test my board with this source code. > > > > Thank you. > > > > Best Regards, > > Seung Youl. > > > > > > > > ----- Original Message ----- > > From: "Ben Warren" > > To: "???" > > Cc: > > Sent: Monday, June 30, 2008 2:43 PM > > Subject: Re: [U-Boot-Users] Does U-boot support ethernet chip LAN9210 from SMSC? > > > > > >> On Sun, Jun 29, 2008 at 10:06 PM, ??? wrote: > >>> Hi Ben, > >>> > >>> Sorry for bothering you. > >>> > >>> I have downloaded the latest version of U-boot. > >>> There is smc911x.c file. I have added this file to Makefile. > >>> The compilation is successful. > >> You don't have to add anything to the Makefile, just use the correct > >> CONFIG options > >>> > >>> But, there are two problems. > >>> 1. there is no LAN9210 entry in chip id list > >> So add it. I haven't looked at the LAN9210 data sheet to even know if > >> it will work with this chip. You're going to have to do some work. > >>> 2. Only 32-bit is supported. > >>> > >> Not true. Both 16 and 32 bit access is supported. Check the source > >> code (hint: look for CONFIG_DRIVER_SMC911X_16_BIT) > >>> Is there any recent driver for LAN9210? > >> > >> I don't know of another or I would have told you about it. > >> > >> Good luck, > >> Ben > >> > ------------------------------------------------------------------------- > Check out the new SourceForge.net Marketplace. > It's the best place to buy or sell services for > just about anything Open Source. > http://sourceforge.net/services/buy/index.php > _______________________________________________ > U-Boot-Users mailing list > U-Boot-Users at lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/u-boot-users -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 189 bytes Desc: This is a digitally signed message part Url : http://lists.denx.de/pipermail/u-boot/attachments/20080630/a381cf3d/attachment.pgp