mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-14 15:14:03 +02:00
6f924b0772
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@9084 3c298f89-4303-0410-b956-a3cf2f4a3e73
117 lines
4.0 KiB
Diff
117 lines
4.0 KiB
Diff
From: Ivo van Doorn <ivdoorn@gmail.com>
|
|
Date: Mon, 14 May 2007 21:06:01 +0000 (+0200)
|
|
Subject: [PATCH] eeprom_93cx6: Add comment for 1us delay after pulse
|
|
X-Git-Tag: v2.6.23-rc1~1201^2~73
|
|
X-Git-Url: http://git.kernel.org/?p=linux%2Fkernel%2Fgit%2Ftorvalds%2Flinux-2.6.git;a=commitdiff_plain;h=4b914dc0493edff19ff698a18198a173a14ba9d2
|
|
|
|
[PATCH] eeprom_93cx6: Add comment for 1us delay after pulse
|
|
|
|
This will add a comment for the 1us delay which is taken
|
|
after the pulse has been switched. The 1us delay is based
|
|
on the specifications so that should be made clear.
|
|
|
|
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
|
|
Signed-off-by: John W. Linville <linville@tuxdriver.com>
|
|
---
|
|
|
|
diff --git a/drivers/misc/eeprom_93cx6.c b/drivers/misc/eeprom_93cx6.c
|
|
index bfcb434..0d6d742 100644
|
|
--- a/drivers/misc/eeprom_93cx6.c
|
|
+++ b/drivers/misc/eeprom_93cx6.c
|
|
@@ -39,6 +39,12 @@ static inline void eeprom_93cx6_pulse_high(struct eeprom_93cx6 *eeprom)
|
|
{
|
|
eeprom->reg_data_clock = 1;
|
|
eeprom->register_write(eeprom);
|
|
+
|
|
+ /*
|
|
+ * Add a short delay for the pulse to work.
|
|
+ * According to the specifications the minimal time
|
|
+ * should be 450ns so a 1us delay is sufficient.
|
|
+ */
|
|
udelay(1);
|
|
}
|
|
|
|
@@ -46,6 +52,12 @@ static inline void eeprom_93cx6_pulse_low(struct eeprom_93cx6 *eeprom)
|
|
{
|
|
eeprom->reg_data_clock = 0;
|
|
eeprom->register_write(eeprom);
|
|
+
|
|
+ /*
|
|
+ * Add a short delay for the pulse to work.
|
|
+ * According to the specifications the minimal time
|
|
+ * should be 450ns so a 1us delay is sufficient.
|
|
+ */
|
|
udelay(1);
|
|
}
|
|
|
|
From: John W. Linville <linville@tuxdriver.com>
|
|
Date: Tue, 12 Jun 2007 01:37:46 +0000 (-0400)
|
|
Subject: [PATCH] eeprom_93cx6: shorten pulse timing to match spec
|
|
X-Git-Tag: v2.6.23-rc1~1201^2~71
|
|
X-Git-Url: http://git.kernel.org/?p=linux%2Fkernel%2Fgit%2Ftorvalds%2Flinux-2.6.git;a=commitdiff_plain;h=7e9400f178d291b2208c4ed9aac0f425c1364000
|
|
|
|
[PATCH] eeprom_93cx6: shorten pulse timing to match spec
|
|
|
|
93cx6 datasheet available here:
|
|
|
|
http://ww1.microchip.com/downloads/en/DeviceDoc/21749F.pdf
|
|
|
|
Figure 1-1 and Table 1-2 on pages 4-5 indicate that both Clock High
|
|
Time and Clock Low Time have largest minimum times of 450ns.
|
|
|
|
Signed-off-by: John W. Linville <linville@tuxdriver.com>
|
|
---
|
|
|
|
diff --git a/drivers/misc/eeprom_93cx6.c b/drivers/misc/eeprom_93cx6.c
|
|
index 0d6d742..ac515b0 100644
|
|
--- a/drivers/misc/eeprom_93cx6.c
|
|
+++ b/drivers/misc/eeprom_93cx6.c
|
|
@@ -42,10 +42,10 @@ static inline void eeprom_93cx6_pulse_high(struct eeprom_93cx6 *eeprom)
|
|
|
|
/*
|
|
* Add a short delay for the pulse to work.
|
|
- * According to the specifications the minimal time
|
|
- * should be 450ns so a 1us delay is sufficient.
|
|
+ * According to the specifications the "maximum minimum"
|
|
+ * time should be 450ns.
|
|
*/
|
|
- udelay(1);
|
|
+ ndelay(450);
|
|
}
|
|
|
|
static inline void eeprom_93cx6_pulse_low(struct eeprom_93cx6 *eeprom)
|
|
From: Francois Romieu <romieu@fr.zoreil.com>
|
|
Date: Tue, 3 Jul 2007 22:31:44 +0000 (+0200)
|
|
Subject: eeprom_93cx6: shorten pulse timing to match spec (bis)
|
|
X-Git-Tag: v2.6.23-rc1~1151^2~11
|
|
X-Git-Url: http://git.kernel.org/?p=linux%2Fkernel%2Fgit%2Ftorvalds%2Flinux-2.6.git;a=commitdiff_plain;h=8abd531e3f77188de2fc41e677d075cc66e61631
|
|
|
|
eeprom_93cx6: shorten pulse timing to match spec (bis)
|
|
|
|
Based on an original idea by John W. Linville.
|
|
|
|
It is the missing part of 42d45ccd60636c28e35c2016f091783bc14ad99c
|
|
|
|
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
|
|
Signed-off-by: Jeff Garzik <jeff@garzik.org>
|
|
---
|
|
|
|
diff --git a/drivers/misc/eeprom_93cx6.c b/drivers/misc/eeprom_93cx6.c
|
|
index ac515b0..ea55654 100644
|
|
--- a/drivers/misc/eeprom_93cx6.c
|
|
+++ b/drivers/misc/eeprom_93cx6.c
|
|
@@ -55,10 +55,10 @@ static inline void eeprom_93cx6_pulse_low(struct eeprom_93cx6 *eeprom)
|
|
|
|
/*
|
|
* Add a short delay for the pulse to work.
|
|
- * According to the specifications the minimal time
|
|
- * should be 450ns so a 1us delay is sufficient.
|
|
+ * According to the specifications the "maximum minimum"
|
|
+ * time should be 450ns.
|
|
*/
|
|
- udelay(1);
|
|
+ ndelay(450);
|
|
}
|
|
|
|
static void eeprom_93cx6_startup(struct eeprom_93cx6 *eeprom)
|