ARM: dts: Configure system timers for am335x

We can now init system timers using the dmtimer and 32k counter
based on only devicetree data and drivers/clocksource timers.
Let's configure the clocksource and clockevent, and drop the old
unused platform data.

As we're just dropping platform data, and the early platform data
init is based on the custom ti,hwmods property, we want to drop
both the platform data and ti,hwmods property in a single patch.

Since the dmtimer can use both 32k clock and system clock as the
source, let's also configure the SoC specific default values. The
board specific dts files can reconfigure these with assigned-clocks
and assigned-clock-parents as needed.

Cc: devicetree@vger.kernel.org
Cc: Grygorii Strashko <grygorii.strashko@ti.com>
Cc: Keerthy <j-keerthy@ti.com>
Cc: Lokesh Vutla <lokeshvutla@ti.com>
Cc: Rob Herring <robh@kernel.org>
Cc: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

5 files changed, 23 insertions, 17 deletions

diff --git a/arch/arm/boot/dts/am33xx-l4.dtsi b/arch/arm/boot/dts/am33xx-l4.dtsi
index 5ed7f3c58c0f..7ff11d6bf0f2 100644
--- a/arch/arm/boot/dts/am33xx-l4.dtsi
+++ b/arch/arm/boot/dts/am33xx-l4.dtsi
@@ -330,9 +330,8 @@
 			};
 		};
 
-		target-module@31000 {			/* 0x44e31000, ap 25 40.0 */
+		timer1_target: target-module@31000 {	/* 0x44e31000, ap 25 40.0 */
 			compatible = "ti,sysc-omap2-timer", "ti,sysc";
-			ti,hwmods = "timer1";
 			reg = <0x31000 0x4>,
 			      <0x31010 0x4>,
 			      <0x31014 0x4>;
@@ -1117,9 +1116,8 @@
 			};
 		};
 
-		target-module@40000 {			/* 0x48040000, ap 22 1e.0 */
+		timer2_target: target-module@40000 {	/* 0x48040000, ap 22 1e.0 */
 			compatible = "ti,sysc-omap4-timer", "ti,sysc";
-			ti,hwmods = "timer2";
 			reg = <0x40000 0x4>,
 			      <0x40010 0x4>,
 			      <0x40014 0x4>;
diff --git a/arch/arm/boot/dts/am33xx.dtsi b/arch/arm/boot/dts/am33xx.dtsi
index a35f5052d76f..3b177c9c4412 100644
--- a/arch/arm/boot/dts/am33xx.dtsi
+++ b/arch/arm/boot/dts/am33xx.dtsi
@@ -619,3 +619,23 @@
 		#reset-cells = <1>;
 	};
 };
+
+/* Preferred always-on timer for clocksource */
+&timer1_target {
+	ti,no-reset-on-init;
+	ti,no-idle;
+	timer@0 {
+		assigned-clocks = <&timer1_fck>;
+		assigned-clock-parents = <&sys_clkin_ck>;
+	};
+};
+
+/* Preferred timer for clockevent */
+&timer2_target {
+	ti,no-reset-on-init;
+	ti,no-idle;
+	timer@0 {
+		assigned-clocks = <&timer2_fck>;
+		assigned-clock-parents = <&sys_clkin_ck>;
+	};
+};
diff --git a/arch/arm/mach-omap2/board-generic.c b/arch/arm/mach-omap2/board-generic.c
index c6f7dcf13a15..cce9523eaa77 100644
--- a/arch/arm/mach-omap2/board-generic.c
+++ b/arch/arm/mach-omap2/board-generic.c
@@ -236,7 +236,7 @@ DT_MACHINE_START(AM33XX_DT, "Generic AM33XX (Flattened Device Tree)")
 	.init_early	= am33xx_init_early,
 	.init_machine	= omap_generic_init,
 	.init_late	= am33xx_init_late,
-	.init_time	= omap3_gptimer_timer_init,
+	.init_time	= omap_init_time_of,
 	.dt_compat	= am33xx_boards_compat,
 	.restart	= am33xx_restart,
 MACHINE_END
diff --git a/arch/arm/mach-omap2/omap_hwmod_33xx_43xx_ipblock_data.c b/arch/arm/mach-omap2/omap_hwmod_33xx_43xx_ipblock_data.c
index dca5a3a7b97c..99c633338488 100644
--- a/arch/arm/mach-omap2/omap_hwmod_33xx_43xx_ipblock_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_33xx_43xx_ipblock_data.c
@@ -367,12 +367,10 @@ struct omap_hwmod am33xx_timer2_hwmod = {
 
 static void omap_hwmod_am33xx_clkctrl(void)
 {
-	CLKCTRL(am33xx_timer2_hwmod, AM33XX_CM_PER_TIMER2_CLKCTRL_OFFSET);
 	CLKCTRL(am33xx_smartreflex0_hwmod,
 		AM33XX_CM_WKUP_SMARTREFLEX0_CLKCTRL_OFFSET);
 	CLKCTRL(am33xx_smartreflex1_hwmod,
 		AM33XX_CM_WKUP_SMARTREFLEX1_CLKCTRL_OFFSET);
-	CLKCTRL(am33xx_timer1_hwmod, AM33XX_CM_WKUP_TIMER1_CLKCTRL_OFFSET);
 	CLKCTRL(am33xx_rtc_hwmod, AM33XX_CM_RTC_RTC_CLKCTRL_OFFSET);
 	PRCM_FLAGS(am33xx_rtc_hwmod, HWMOD_OMAP4_ZERO_CLKCTRL_OFFSET);
 	CLKCTRL(am33xx_gpmc_hwmod, AM33XX_CM_PER_GPMC_CLKCTRL_OFFSET);
diff --git a/arch/arm/mach-omap2/omap_hwmod_33xx_data.c b/arch/arm/mach-omap2/omap_hwmod_33xx_data.c
index c64b735c8acc..3cf9c4c90b18 100644
--- a/arch/arm/mach-omap2/omap_hwmod_33xx_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_33xx_data.c
@@ -265,14 +265,6 @@ static struct omap_hwmod_ocp_if am33xx_l4_wkup__control = {
 	.user		= OCP_USER_MPU,
 };
 
-/* l4 wkup -> timer1 */
-static struct omap_hwmod_ocp_if am33xx_l4_wkup__timer1 = {
-	.master		= &am33xx_l4_wkup_hwmod,
-	.slave		= &am33xx_timer1_hwmod,
-	.clk		= "dpll_core_m4_div2_ck",
-	.user		= OCP_USER_MPU,
-};
-
 static struct omap_hwmod_ocp_if *am33xx_hwmod_ocp_ifs[] __initdata = {
 	&am33xx_l3_main__emif,
 	&am33xx_mpu__l3_main,
@@ -291,9 +283,7 @@ static struct omap_hwmod_ocp_if *am33xx_hwmod_ocp_ifs[] __initdata = {
 	&am33xx_l4_wkup__control,
 	&am33xx_l4_wkup__smartreflex0,
 	&am33xx_l4_wkup__smartreflex1,
-	&am33xx_l4_wkup__timer1,
 	&am33xx_l4_wkup__rtc,
-	&am33xx_l4_ls__timer2,
 	&am33xx_l3_s__gpmc,
 	&am33xx_l3_main__ocmc,
 	NULL,