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omap3: Introduce OMAP3630

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OMAP3630 is the latest in the family of OMAP3 devices
and among the changes it introduces are:

New OPP levels for new voltage and frequency levels. a bunch of
Bug fixes to various modules feature additions, notably with ISP,
sDMA etc.

Details about the chip is available here:
http://focus.ti.com/general/docs/wtbu/wtbuproductcontent.tsp?templateId=6123&navigationId=12836&contentId=52606

Strategy used:
Strategy to introduce this device into Linux was discussed here:
Ref: http://marc.info/?t=125343303400003&r=1&w=2

Two approaches were available:
a) Consider 3630 generation of devices as a new family of silicon
b) Consider 3630 as an offshoot of 3430 family of devices

As a common consensus, (b) seems to be more valid for 3630 as:
* There are changes which are easily handled by using "FEATURES"
  infrastructure.
  For details how to do this, see thread:
  http://marc.info/?t=125050998500001&r=1&w=2
* Most of existing 34xx infrastructure can be reused(almost 90%+)
	- so no ugly if (cpu_is_omap34xx() || cpu_is_omap36xx())
	  all over the place
	- lesser chance of bugs due to reuse of proven code flow
	- 36xx specific handling can still be done where required
	  within the existing infrastructure

NOTE:
* If additional 34xx series are added, OMAP3430_REV_ESXXXX can be
  added on top of the existing 3630 ones are renumbered

This patch was tested on SDP3430, boot tested on 3630 platform using
3430sdp defconfig

Signed-off-by: Madhusudhan Chikkature Rajashekar <madhu.cr@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Vikram Pandita <vikram.pandita@ti.com>
Cc: Allen Pais <allen.pais@ti.com>
Cc: Anand Gadiyar <gadiyar@ti.com>
Cc: Benoit Cousson <b-cousson@ti.com>
Cc: Felipe Balbi <felipe.balbi@nokia.com>
Cc: Kevin Hilman <khilman@deeprootsystems.com>
Cc: Sanjeev Premi <premi@ti.com>
Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
Cc: Sergio Alberto Aguirre Rodriguez <saaguirre@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Nishanth Menon 2009-11-22 10:10:56 -08:00 committed by Tony Lindgren
parent 048f4bd760
commit 2456a10fb3
2 changed files with 27 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
arch/arm/mach-omap2/id.c
View File

@ -209,7 +209,9 @@ void __init omap3_check_revision(void)
hawkeye = (idcode >> 12) & 0xffff;
rev = (idcode >> 28) & 0xff;
if (hawkeye == 0xb7ae) {
switch (hawkeye) {
case 0xb7ae:
/* Handle 34xx/35xx devices */
switch (rev) {
case 0: /* Take care of early samples */
case 1:
@ -228,6 +230,21 @@ void __init omap3_check_revision(void)
/* Use the latest known revision as default */
omap_revision = OMAP3430_REV_ES3_1;
}
break;
case 0xb891:
/* Handle 36xx devices */
switch (rev) {
case 0:
omap_revision = OMAP3630_REV_ES1_0;
break;
default:
/* Use the latest known revision as default */
omap_revision = OMAP3630_REV_ES1_0;
}
break;
default:
/* Unknown default to latest silicon rev as default*/
omap_revision = OMAP3630_REV_ES1_0;
}
}
@ -249,9 +266,10 @@ void __init omap3_cpuinfo(void)
* on available features. Upon detection, update the CPU id
* and CPU class bits.
*/
if (omap3_has_iva() && omap3_has_sgx()) {
if (cpu_is_omap3630())
strcpy(cpu_name, "3630");
else if (omap3_has_iva() && omap3_has_sgx())
strcpy(cpu_name, "3430/3530");
}
else if (omap3_has_sgx()) {
omap_revision = OMAP3525_REV(rev);
strcpy(cpu_name, "3525");

6
arch/arm/plat-omap/include/plat/cpu.h
View File

@ -180,6 +180,7 @@ IS_OMAP_CLASS(34xx, 0x34)
IS_OMAP_SUBCLASS(242x, 0x242)
IS_OMAP_SUBCLASS(243x, 0x243)
IS_OMAP_SUBCLASS(343x, 0x343)
IS_OMAP_SUBCLASS(363x, 0x363)
#define cpu_is_omap7xx() 0
#define cpu_is_omap15xx() 0
@ -325,6 +326,7 @@ IS_OMAP_TYPE(3430, 0x3430)
#define cpu_is_omap3525() 0
#define cpu_is_omap3530() 0
#define cpu_is_omap3430() 0
#define cpu_is_omap3630() 0
/*
* Whether we have MULTI_OMAP1 or not, we still need to distinguish
@ -389,6 +391,8 @@ IS_OMAP_TYPE(3430, 0x3430)
(omap3_has_sgx()) && \
(!omap3_has_iva()))
# define cpu_is_omap3530() (cpu_is_omap3430())
# undef cpu_is_omap3630
# define cpu_is_omap3630() is_omap363x()
#endif
# if defined(CONFIG_ARCH_OMAP4)
@ -419,6 +423,8 @@ IS_OMAP_TYPE(3430, 0x3430)
#define OMAP3430_REV_ES3_0 0x34303034
#define OMAP3430_REV_ES3_1 0x34304034
#define OMAP3630_REV_ES1_0 0x36300034
#define OMAP35XX_CLASS 0x35000034
#define OMAP3503_REV(v) (OMAP35XX_CLASS | (0x3503 << 16) | (v << 12))
#define OMAP3515_REV(v) (OMAP35XX_CLASS | (0x3515 << 16) | (v << 12))