This patch enables AM35x SoCs to use generic OMAP3 hwmods
(i,e. omap3xxx_hwmods) by allowing am35xx_init_early() to
disable the modules which are not present in AM3517.
Reviewed-by: Sanjeev Premi <pr...@ti.com>
Signed-off-by: Abhilash K V <abhilash...@ti.com>
---
arch/arm/mach-omap2/io.c | 11 +++++++++++
arch/arm/mach-omap2/omap_hwmod.c | 2 ++
arch/arm/mach-omap2/omap_hwmod_3xxx_data.c | 18 ++++++++++++++++++
arch/arm/plat-omap/include/plat/omap_hwmod.h | 3 +++
4 files changed, 34 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-omap2/io.c b/arch/arm/mach-omap2/io.c
index 15f91c4..6a6e2cc 100644
--- a/arch/arm/mach-omap2/io.c
+++ b/arch/arm/mach-omap2/io.c
@@ -240,6 +240,16 @@ static struct map_desc omap44xx_io_desc[] __initdata = {
};
#endif
+static char *am3517_unused_hwmods[] = {
+ "iva",
+ "sr1_hwmod",
+ "sr2_hwmod",
+ "mailbox",
+ "usb_otg_hs",
+ NULL,
+};
+
+
static void __init _omap2_map_common_io(void)
{
/* Normally devicemaps_init() would flush caches and tlb after
@@ -432,6 +442,7 @@ void __init omap3630_init_early(void)
void __init am35xx_init_early(void)
{
+ omap2_disable_unused_hwmods(am3517_unused_hwmods);
omap2_init_common_infrastructure();
}
diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
index d713807..c7b0395 100644
--- a/arch/arm/mach-omap2/omap_hwmod.c
+++ b/arch/arm/mach-omap2/omap_hwmod.c
@@ -1954,6 +1954,8 @@ int __init omap_hwmod_register(struct omap_hwmod **ohs)
i = 0;
do {
+ if (ohs[i]->flags & HWMOD_UNUSED)
+ continue;
r = _register(ohs[i]);
WARN(r, "omap_hwmod: %s: _register returned %d\n", ohs[i]->name,
r);
diff --git a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
index 3008e16..682171c 100644
--- a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
@@ -3259,6 +3259,24 @@ static __initdata struct omap_hwmod *am35xx_hwmods[] = {
NULL
};
+void __init omap2_disable_unused_hwmods(char *unused_hwmods[])
+{
+ int index;
+
+ for (index = 0; omap3xxx_hwmods[index]; index++) {
+ char **hwmods = unused_hwmods;
+ while (*hwmods) {
+ if (strcmp(omap3xxx_hwmods[index]->name,
+ *hwmods) == 0) {
+ omap3xxx_hwmods[index]->flags
+ = HWMOD_UNUSED;
+ break;
+ }
+ hwmods++;
+ }
+ }
+}
+
int __init omap3xxx_hwmod_init(void)
{
int r;
diff --git a/arch/arm/plat-omap/include/plat/omap_hwmod.h
b/arch/arm/plat-omap/include/plat/omap_hwmod.h
index 5419f1a..96650f3 100644
--- a/arch/arm/plat-omap/include/plat/omap_hwmod.h
+++ b/arch/arm/plat-omap/include/plat/omap_hwmod.h
@@ -398,6 +398,7 @@ struct omap_hwmod_omap4_prcm {
* in order to complete the reset. Optional clocks will be disabled
* again after the reset.
* HWMOD_16BIT_REG: Module has 16bit registers
+ * HWMOD_UNUSED: The IP for this module is unused or disabled on current SoC
*/
#define HWMOD_SWSUP_SIDLE (1 << 0)
#define HWMOD_SWSUP_MSTANDBY (1 << 1)
@@ -408,6 +409,7 @@ struct omap_hwmod_omap4_prcm {
#define HWMOD_NO_IDLEST (1 << 6)
#define HWMOD_CONTROL_OPT_CLKS_IN_RESET (1 << 7)
#define HWMOD_16BIT_REG (1 << 8)
+#define HWMOD_UNUSED (1 << 9)
/*
* omap_hwmod._int_flags definitions
@@ -612,5 +614,6 @@ extern int omap2420_hwmod_init(void);
extern int omap2430_hwmod_init(void);
extern int omap3xxx_hwmod_init(void);
extern int omap44xx_hwmod_init(void);
+extern void omap2_disable_unused_hwmods(char *unused_hwmods[]);
#endif
--
1.7.1
--
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