From 7dd9d502b6cb9f82c9726ea601276b666a93e95d Mon Sep 17 00:00:00 2001 From: Jon Hunter Date: Wed, 12 Sep 2012 11:40:58 -0500 Subject: [PATCH] ARM: OMAP3: Add generic machine descriptor for boards with OMAP3 GP devices OMAP3 devices may or may not have security features enabled. Security enabled devices are known as high-secure (HS) and devices without security are known as general purpose (GP). Some OMAP3 boards, such as the OMAP3 beagle board, only use GP devices and for GP devices there is a 12th timer available on-chip that can operate at 32kHz. The clock for 12th timer is generated by an internal oscillator and is unique this timer. Boards such as the beagle board use this timer as a 32kHz based clock-events timer because early versions of the board had a hardware problem preventing them from using other on-chip timers clocked by a external 32kHz clock. When booting with device-tree all OMAP3 devices use timer 1 by default for the clock-events timer. Therefore, add a generic machine descriptor for boards with OMAP3 GP devices so that they can use the 12th timer as the clock-events timer instead of the default. Signed-off-by: Jon Hunter --- arch/arm/mach-omap2/board-generic.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/arch/arm/mach-omap2/board-generic.c b/arch/arm/mach-omap2/board-generic.c index 601ecdf..d690180 100644 --- a/arch/arm/mach-omap2/board-generic.c +++ b/arch/arm/mach-omap2/board-generic.c @@ -97,6 +97,23 @@ DT_MACHINE_START(OMAP3_DT, "Generic OMAP3 (Flattened Device Tree)") .dt_compat = omap3_boards_compat, .restart = omap_prcm_restart, MACHINE_END + +static const char *omap3_gp_boards_compat[] __initdata = { + "ti,omap3-beagle", + NULL, +}; + +DT_MACHINE_START(OMAP3_GP_DT, "Generic OMAP3-GP (Flattened Device Tree)") + .reserve = omap_reserve, + .map_io = omap3_map_io, + .init_early = omap3430_init_early, + .init_irq = omap_intc_of_init, + .handle_irq = omap3_intc_handle_irq, + .init_machine = omap_generic_init, + .timer = &omap3_secure_timer, + .dt_compat = omap3_gp_boards_compat, + .restart = omap_prcm_restart, +MACHINE_END #endif #ifdef CONFIG_SOC_AM33XX -- 2.7.4