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OMAP2+: hwmod: use status bit info for reset line

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On OMAP2 and OMAP3 the reset ctrl shift doesn't match the
status bit, as it does on OMAP4, when handling the reset lines.

This patch adds a new member in the reset info structure, so now it
can be added as part of hwmod data, and checked accordingly for
OMAP2 or 3; otherwise, there could be cases when the shift masks
doesn't match both of the registers, and a successful reset might
throw an error message or vice versa.

Signed-off-by: Omar Ramirez Luna <omar.ramirez@ti.com>
[paul@pwsan.com: added a warning if st_shift used on OMAP4; renamed 'r'
 variable; improved some documentation]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
This commit is contained in:
omar ramirez 2011-03-04 13:32:44 -07:00 • committed by Paul Walmsley
parent 4d2274c543
commit cc1226e763
4 changed files with 58 additions and 42 deletions
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2
arch/arm/plat-omap/include/plat/omap_hwmod.h
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@ -124,6 +124,7 @@ struct omap_hwmod_dma_info {
* struct omap_hwmod_rst_info - IPs reset lines use by hwmod
* @name: name of the reset line (module local name)
* @rst_shift: Offset of the reset bit
* @st_shift: Offset of the reset status bit (OMAP2/3 only)
*
* @name should be something short, e.g., "cpu0" or "rst". It is defined
* locally to the hwmod.
@ -131,6 +132,7 @@ struct omap_hwmod_dma_info {
struct omap_hwmod_rst_info {
const char *name;
u8 rst_shift;
u8 st_shift;
};
/**