diff mbox

ARM: OMAP5: id: Remove ES1.0 support

Message ID 1379513142-11125-1-git-send-email-nm@ti.com (mailing list archive)
State New, archived
Headers show

Commit Message

Nishanth Menon Sept. 18, 2013, 2:05 p.m. UTC
OMAP5 ES1.0 was intended as a test chip and has major register level
differences w.r.t ES2.0 revision of the chip. All register defines,
dts support has been solely added for ES2.0 version of the chip.
Further, all ES1.0 chips and platforms are supposed to have been
removed from circulation. Hence, there is no need to further retain
any resemblence of ES1.0 support in id detection code.

Remove the omap_revision handling and BUG() instead to prevent folks
who mistakenly try an older unsupported chip and report bogus errors.

Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
---
ref: http://marc.info/?l=linux-omap&m=137951198232339&w=2
based on 3.12-rc1 tag

 arch/arm/mach-omap2/id.c  |    8 ++++----
 arch/arm/mach-omap2/soc.h |    2 --
 2 files changed, 4 insertions(+), 6 deletions(-)

Comments

Santosh Shilimkar Sept. 18, 2013, 2:07 p.m. UTC | #1
On Wednesday 18 September 2013 10:05 AM, Nishanth Menon wrote:
> OMAP5 ES1.0 was intended as a test chip and has major register level
> differences w.r.t ES2.0 revision of the chip. All register defines,
> dts support has been solely added for ES2.0 version of the chip.
> Further, all ES1.0 chips and platforms are supposed to have been
> removed from circulation. Hence, there is no need to further retain
> any resemblence of ES1.0 support in id detection code.
> 
> Remove the omap_revision handling and BUG() instead to prevent folks
> who mistakenly try an older unsupported chip and report bogus errors.
> 
> Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
> Signed-off-by: Nishanth Menon <nm@ti.com>
> ---
> ref: http://marc.info/?l=linux-omap&m=137951198232339&w=2
> based on 3.12-rc1 tag
> 
That was quick ...
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Tony Lindgren Oct. 8, 2013, 9:31 p.m. UTC | #2
* Santosh Shilimkar <santosh.shilimkar@ti.com> [130918 07:15]:
> On Wednesday 18 September 2013 10:05 AM, Nishanth Menon wrote:
> > OMAP5 ES1.0 was intended as a test chip and has major register level
> > differences w.r.t ES2.0 revision of the chip. All register defines,
> > dts support has been solely added for ES2.0 version of the chip.
> > Further, all ES1.0 chips and platforms are supposed to have been
> > removed from circulation. Hence, there is no need to further retain
> > any resemblence of ES1.0 support in id detection code.
> > 
> > Remove the omap_revision handling and BUG() instead to prevent folks
> > who mistakenly try an older unsupported chip and report bogus errors.
> > 
> > Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
> > Signed-off-by: Nishanth Menon <nm@ti.com>
> > ---
> > ref: http://marc.info/?l=linux-omap&m=137951198232339&w=2
> > based on 3.12-rc1 tag
> > 
> That was quick ...
> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>

Heh, it was made, but not supposed to be used, and still merged
to mainline kernel..

I guess this is the way to deal with this issue as we don't have
really any omap5 es1 support in place. So applying into
omap-for-v3.13/soc branch.

Tony
Santosh Shilimkar Oct. 8, 2013, 9:34 p.m. UTC | #3
On Tuesday 08 October 2013 05:31 PM, Tony Lindgren wrote:
> * Santosh Shilimkar <santosh.shilimkar@ti.com> [130918 07:15]:
>> On Wednesday 18 September 2013 10:05 AM, Nishanth Menon wrote:
>>> OMAP5 ES1.0 was intended as a test chip and has major register level
>>> differences w.r.t ES2.0 revision of the chip. All register defines,
>>> dts support has been solely added for ES2.0 version of the chip.
>>> Further, all ES1.0 chips and platforms are supposed to have been
>>> removed from circulation. Hence, there is no need to further retain
>>> any resemblence of ES1.0 support in id detection code.
>>>
>>> Remove the omap_revision handling and BUG() instead to prevent folks
>>> who mistakenly try an older unsupported chip and report bogus errors.
>>>
>>> Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
>>> Signed-off-by: Nishanth Menon <nm@ti.com>
>>> ---
>>> ref: http://marc.info/?l=linux-omap&m=137951198232339&w=2
>>> based on 3.12-rc1 tag
>>>
>> That was quick ...
>> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
> 
> Heh, it was made, but not supposed to be used, and still merged
> to mainline kernel..
> 
You know the history. At least for this silicon we avoided
tons of datafiles merges for ES1.0 which changed completely for
ES2.0. At least during that period people had choice to merge
the data-files based on the board they have to test out ;-)

> I guess this is the way to deal with this issue as we don't have
> really any omap5 es1 support in place. So applying into
> omap-for-v3.13/soc branch.
> 
Thanks !!

Regards,
Santosh
diff mbox

Patch

diff --git a/arch/arm/mach-omap2/id.c b/arch/arm/mach-omap2/id.c
index 0289adc..4f8f1cb 100644
--- a/arch/arm/mach-omap2/id.c
+++ b/arch/arm/mach-omap2/id.c
@@ -576,8 +576,8 @@  void __init omap5xxx_check_revision(void)
 	case 0xb942:
 		switch (rev) {
 		case 0:
-			omap_revision = OMAP5430_REV_ES1_0;
-			break;
+			/* No support for ES1.0 Test chip */
+			BUG();
 		case 1:
 		default:
 			omap_revision = OMAP5430_REV_ES2_0;
@@ -587,8 +587,8 @@  void __init omap5xxx_check_revision(void)
 	case 0xb998:
 		switch (rev) {
 		case 0:
-			omap_revision = OMAP5432_REV_ES1_0;
-			break;
+			/* No support for ES1.0 Test chip */
+			BUG();
 		case 1:
 		default:
 			omap_revision = OMAP5432_REV_ES2_0;
diff --git a/arch/arm/mach-omap2/soc.h b/arch/arm/mach-omap2/soc.h
index 4588df1..076bd90 100644
--- a/arch/arm/mach-omap2/soc.h
+++ b/arch/arm/mach-omap2/soc.h
@@ -455,9 +455,7 @@  IS_OMAP_TYPE(3430, 0x3430)
 #define OMAP4470_REV_ES1_0	(OMAP447X_CLASS | (0x10 << 8))
 
 #define OMAP54XX_CLASS		0x54000054
-#define OMAP5430_REV_ES1_0	(OMAP54XX_CLASS | (0x30 << 16) | (0x10 << 8))
 #define OMAP5430_REV_ES2_0	(OMAP54XX_CLASS | (0x30 << 16) | (0x20 << 8))
-#define OMAP5432_REV_ES1_0	(OMAP54XX_CLASS | (0x32 << 16) | (0x10 << 8))
 #define OMAP5432_REV_ES2_0	(OMAP54XX_CLASS | (0x32 << 16) | (0x20 << 8))
 
 void omap2xxx_check_revision(void);