From: Nishanth Menon Date: Mon, 7 Oct 2013 20:43:49 +0000 (-0500) Subject: ARM: OMAP3: Fix hardware detection for omap3630 when booted with device tree X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=016c12d2fb8584db392211bc6b0bdd6fcf7cfd97;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git ARM: OMAP3: Fix hardware detection for omap3630 when booted with device tree SoC family definitions at the moment are reactive to board needs as a result, beagle-xm would matchup with ti,omap3 which invokes omap3430_init_early instead of omap3630_init_early. Obviously, this is the wrong behavior. With clock node dts conversion, we get the following warnings before system hangs as a result and 3630 based platforms fails to boot (uart4 clocks are only present in OMAP3630 and not present in OMAP3430): ... omap_hwmod: uart4: cannot clk_get main_clk uart4_fck omap_hwmod: uart4: cannot _init_clocks WARNING: CPU: 0 PID: 1 at arch/arm/mach-omap2/omap_hwmod.c:2434 _init+0x6c/0x80() omap_hwmod: uart4: couldn't init clocks ... WARNING: CPU: 0 PID: 1 at arch/arm/mach-omap2/omap_hwmod.c:2126 _enable+0x254/0x280() omap_hwmod: timer12: enabled state can only be entered from initialized, idle, or disabled state ... WARNING: CPU: 0 PID: 46 at arch/arm/mach-omap2/omap_hwmod.c:2224 _idle+0xd4/0xf8() omap_hwmod: timer12: idle state can only be entered from enabled state WARNING: CPU: 0 PID: 1 at arch/arm/mach-omap2/omap_hwmod.c:2126 _enable+0x254/0x280() omap_hwmod: uart4: enabled state can only be entered from initialized, idle, or disabled state So, add specific compatiblity for 3630 to allow match for Beagle-XM platform. Signed-off-by: Nishanth Menon [tony@atomide.com: left out ti,omap343x, updated comments] Signed-off-by: Tony Lindgren --- diff --git a/arch/arm/boot/dts/omap3-beagle-xm.dts b/arch/arm/boot/dts/omap3-beagle-xm.dts index 0c514dc8460c..2816bf612672 100644 --- a/arch/arm/boot/dts/omap3-beagle-xm.dts +++ b/arch/arm/boot/dts/omap3-beagle-xm.dts @@ -11,7 +11,7 @@ / { model = "TI OMAP3 BeagleBoard xM"; - compatible = "ti,omap3-beagle-xm", "ti,omap3-beagle", "ti,omap3"; + compatible = "ti,omap3-beagle-xm", "ti,omap36xx", "ti,omap3"; cpus { cpu@0 { diff --git a/arch/arm/mach-omap2/board-generic.c b/arch/arm/mach-omap2/board-generic.c index 39c78387ddec..87162e1b94a5 100644 --- a/arch/arm/mach-omap2/board-generic.c +++ b/arch/arm/mach-omap2/board-generic.c @@ -129,6 +129,24 @@ DT_MACHINE_START(OMAP3_DT, "Generic OMAP3 (Flattened Device Tree)") .restart = omap3xxx_restart, MACHINE_END +static const char *omap36xx_boards_compat[] __initdata = { + "ti,omap36xx", + NULL, +}; + +DT_MACHINE_START(OMAP36XX_DT, "Generic OMAP36xx (Flattened Device Tree)") + .reserve = omap_reserve, + .map_io = omap3_map_io, + .init_early = omap3630_init_early, + .init_irq = omap_intc_of_init, + .handle_irq = omap3_intc_handle_irq, + .init_machine = omap_generic_init, + .init_late = omap3_init_late, + .init_time = omap3_sync32k_timer_init, + .dt_compat = omap36xx_boards_compat, + .restart = omap3xxx_restart, +MACHINE_END + static const char *omap3_gp_boards_compat[] __initdata = { "ti,omap3-beagle", "timll,omap3-devkit8000",