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yaml --- r: 68598 b: refs/heads/master c: 24d0fb4 h: refs/heads/master v: v3
git-mirror · Oct 13, 2007 · 8da5382 · 8da5382
1 parent e2ff21a
commit 8da5382
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Showing 2 changed files with 10 additions and 2 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 08fb68bb4bbc9c5970e4ed4920cb6144a70684cd
+refs/heads/master: 24d0fb423ca18adf509dec8a7326c0bdd6653e41
diff --git a/trunk/drivers/i2c/busses/Kconfig b/trunk/drivers/i2c/busses/Kconfig
@@ -75,11 +75,19 @@ config I2C_AMD8111
 
 config I2C_AT91
 	tristate "Atmel AT91 I2C Two-Wire interface (TWI)"
-	depends on ARCH_AT91 && EXPERIMENTAL
+	depends on ARCH_AT91 && EXPERIMENTAL && BROKEN
 	help
 	  This supports the use of the I2C interface on Atmel AT91
 	  processors.
 
+	  This driver is BROKEN because the controller which it uses
+	  will easily trigger RX overrun and TX underrun errors.  Using
+	  low I2C clock rates may partially work around those issues
+	  on some systems.  Another serious problem is that there is no
+	  documented way to issue repeated START conditions, as needed
+	  to support combined I2C messages.  Use the i2c-gpio driver
+	  unless your system can cope with those limitations.
+
 config I2C_AU1550
 	tristate "Au1550/Au1200 SMBus interface"
 	depends on SOC_AU1550 || SOC_AU1200