[PATCH 12/15] ARM: dts: Configure system timers for ti81xx

Tony Lindgren
2020-04-29T21:54:45Z

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.

Note that for ti81xx, also timer1 is of type 2 unlike on am335x
where timer1 is type1 while the rest of the timers are type 2.

Cc: devicetree@vger.kernel.org
Cc: Brian Hutchinson <b.hutchman@gmail.com>
Cc: Graeme Smecher <gsmecher@threespeedlogic.com>
Cc: Keerthy <j-keerthy@ti.com>
Cc: Lokesh Vutla <lokeshvutla@ti.com>
Cc: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
---
arch/arm/boot/dts/dm814x.dtsi | 78 +++++++++++++++++---
arch/arm/boot/dts/dm816x.dtsi | 82 ++++++++++++++++++----
arch/arm/mach-omap2/board-generic.c | 4 +-
arch/arm/mach-omap2/omap_hwmod_81xx_data.c | 74 -------------------
4 files changed, 138 insertions(+), 100 deletions(-)

diff --git a/arch/arm/boot/dts/dm814x.dtsi b/arch/arm/boot/dts/dm814x.dtsi
--- a/arch/arm/boot/dts/dm814x.dtsi
+++ b/arch/arm/boot/dts/dm814x.dtsi
@@ -308,14 +308,30 @@ mcspi4: spi@1a4000 {
ti,hwmods = "mcspi4";
};

- timer1: timer@2e000 {
- compatible = "ti,dm814-timer";
- reg = <0x2e000 0x2000>;
- interrupts = <67>;
- ti,hwmods = "timer1";
- ti,timer-alwon;
+ timer1_target: target-module@2e000 {
+ compatible = "ti,sysc-omap4-timer", "ti,sysc";
+ reg = <0x2e000 0x4>,
+ <0x2e010 0x4>;
+ reg-names = "rev", "sysc";
+ ti,sysc-mask = <SYSC_OMAP4_SOFTRESET>;
+ ti,sysc-sidle = <SYSC_IDLE_FORCE>,
+ <SYSC_IDLE_NO>,
+ <SYSC_IDLE_SMART>,
+ <SYSC_IDLE_SMART_WKUP>;
clocks = <&timer1_fck>;
clock-names = "fck";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges = <0x0 0x2e000 0x1000>;
+
+ timer1: timer@0 {
+ compatible = "ti,am335x-timer-1ms";
+ reg = <0x0 0x400>;
+ interrupts = <67>;
+ ti,timer-alwon;
+ clocks = <&timer1_fck>;
+ clock-names = "fck";
+ };
};

uart1: uart@20000 {
@@ -348,13 +364,29 @@ uart3: uart@24000 {
dma-names = "tx", "rx";
};

- timer2: timer@40000 {
- compatible = "ti,dm814-timer";
- reg = <0x40000 0x2000>;
- interrupts = <68>;
- ti,hwmods = "timer2";
+ timer2_target: target-module@40000 {
+ compatible = "ti,sysc-omap4-timer", "ti,sysc";
+ reg = <0x40000 0x4>,
+ <0x40010 0x4>;
+ reg-names = "rev", "sysc";
+ ti,sysc-mask = <SYSC_OMAP4_SOFTRESET>;
+ ti,sysc-sidle = <SYSC_IDLE_FORCE>,
+ <SYSC_IDLE_NO>,
+ <SYSC_IDLE_SMART>,
+ <SYSC_IDLE_SMART_WKUP>;
clocks = <&timer2_fck>;
clock-names = "fck";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges = <0x0 0x40000 0x1000>;
+
+ timer2: timer@0 {
+ compatible = "ti,dm814-timer";
+ reg = <0 0x1000>;
+ interrupts = <68>;
+ clocks = <&timer2_fck>;
+ clock-names = "fck";
+ };
};

timer3: timer@42000 {
@@ -735,3 +767,27 @@ gpmc: gpmc@50000000 {
};

#include "dm814x-clocks.dtsi"
+
+/* Timer for clocksource, configured without interrupts */
+&timer1_target {
+ ti,no-reset-on-init;
+ ti,no-idle;
+ timer@0 {
+ compatible = "ti,dmtimer";
+ /delete-property/interrupts;
+ /delete-property/interrupts-extended;
+ assigned-clocks = <&timer1_fck>;
+ assigned-clock-parents = <&devosc_ck>;
+ };
+};
+
+/* Timer for clockevent */
+&timer2_target {
+ ti,no-reset-on-init;
+ ti,no-idle;
+ timer@0 {
+ compatible = "ti,dmtimer";
+ assigned-clocks = <&timer2_fck>;
+ assigned-clock-parents = <&devosc_ck>;
+ };
+};
diff --git a/arch/arm/boot/dts/dm816x.dtsi b/arch/arm/boot/dts/dm816x.dtsi
--- a/arch/arm/boot/dts/dm816x.dtsi
+++ b/arch/arm/boot/dts/dm816x.dtsi
@@ -440,23 +440,55 @@ mmc1: mmc@48060000 {
dma-names = "tx", "rx";
};

- timer1: timer@4802e000 {
- compatible = "ti,dm816-timer";
- reg = <0x4802e000 0x2000>;
- interrupts = <67>;
- ti,hwmods = "timer1";
- ti,timer-alwon;
- clocks = <&timer1_fck>;
+ timer1_target: target-module@4802e000 {
+ compatible = "ti,sysc-omap4-timer", "ti,sysc";
+ reg = <0x4802e000 0x4>,
+ <0x4802e010 0x4>;
+ reg-names = "rev", "sysc";
+ ti,sysc-mask = <SYSC_OMAP4_SOFTRESET>;
+ ti,sysc-sidle = <SYSC_IDLE_FORCE>,
+ <SYSC_IDLE_NO>,
+ <SYSC_IDLE_SMART>,
+ <SYSC_IDLE_SMART_WKUP>;
+ clocks = <&alwon_clkctrl DM816_TIMER1_CLKCTRL 0>;
clock-names = "fck";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges = <0x0 0x4802e000 0x1000>;
+
+ timer1: timer@0 {
+ compatible = "ti,dm816-timer";
+ reg = <0 0x1000>;
+ interrupts = <67>;
+ ti,timer-alwon;
+ clocks = <&alwon_clkctrl DM816_TIMER1_CLKCTRL 0>;
+ clock-names = "fck";
+ };
};

- timer2: timer@48040000 {
- compatible = "ti,dm816-timer";
- reg = <0x48040000 0x2000>;
- interrupts = <68>;
- ti,hwmods = "timer2";
- clocks = <&timer2_fck>;
+ timer2_target: target-module@48040000 {
+ compatible = "ti,sysc-omap4-timer", "ti,sysc";
+ reg = <0x48040000 0x4>,
+ <0x48040010 0x4>;
+ reg-names = "rev", "sysc";
+ ti,sysc-mask = <SYSC_OMAP4_SOFTRESET>;
+ ti,sysc-sidle = <SYSC_IDLE_FORCE>,
+ <SYSC_IDLE_NO>,
+ <SYSC_IDLE_SMART>,
+ <SYSC_IDLE_SMART_WKUP>;
+ clocks = <&alwon_clkctrl DM816_TIMER2_CLKCTRL 0>;
clock-names = "fck";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges = <0x0 0x48040000 0x1000>;
+
+ timer2: timer@0 {
+ compatible = "ti,dm816-timer";
+ reg = <0 0x1000>;
+ interrupts = <68>;
+ clocks = <&alwon_clkctrl DM816_TIMER2_CLKCTRL 0>;
+ clock-names = "fck";
+ };
};

timer3: timer@48042000 {
@@ -642,3 +674,27 @@ wd_timer2: wd_timer@480c2000 {
};

#include "dm816x-clocks.dtsi"
+
+/* Timer for clocksource, configured without interrupts */
+&timer1_target {
+ ti,no-reset-on-init;
+ ti,no-idle;
+ timer@0 {
+ compatible = "ti,dmtimer";
+ /delete-property/interrupts;
+ /delete-property/interrupts-extended;
+ assigned-clocks = <&timer1_fck>;
+ assigned-clock-parents = <&sys_clkin_ck>;
+ };
+};
+
+/* Timer for clockevent */
+&timer2_target {
+ ti,no-reset-on-init;
+ ti,no-idle;
+ timer@0 {
+ compatible = "ti,dmtimer";
+ 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
--- a/arch/arm/mach-omap2/board-generic.c
+++ b/arch/arm/mach-omap2/board-generic.c
@@ -201,7 +201,7 @@ DT_MACHINE_START(TI814X_DT, "Generic ti814x (Flattened Device Tree)")
.init_early = ti814x_init_early,
.init_machine = omap_generic_init,
.init_late = ti81xx_init_late,
- .init_time = omap3_gptimer_timer_init,
+ .init_time = omap_init_time_of,
.dt_compat = ti814x_boards_compat,
.restart = ti81xx_restart,
MACHINE_END
@@ -218,7 +218,7 @@ DT_MACHINE_START(TI816X_DT, "Generic ti816x (Flattened Device Tree)")
.init_early = ti816x_init_early,
.init_machine = omap_generic_init,
.init_late = ti81xx_init_late,
- .init_time = omap3_gptimer_timer_init,
+ .init_time = omap_init_time_of,
.dt_compat = ti816x_boards_compat,
.restart = ti81xx_restart,
MACHINE_END
diff --git a/arch/arm/mach-omap2/omap_hwmod_81xx_data.c b/arch/arm/mach-omap2/omap_hwmod_81xx_data.c
--- a/arch/arm/mach-omap2/omap_hwmod_81xx_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_81xx_data.c
@@ -690,76 +690,6 @@ static struct omap_hwmod_class dm816x_timer_hwmod_class = {
.sysc = &dm816x_timer_sysc,
};

-static struct omap_hwmod dm814x_timer1_hwmod = {
- .name = "timer1",
- .clkdm_name = "alwon_l3s_clkdm",
- .main_clk = "timer1_fck",
- .class = &dm816x_timer_hwmod_class,
- .flags = HWMOD_NO_IDLEST,
-};
-
-static struct omap_hwmod_ocp_if dm814x_l4_ls__timer1 = {
- .master = &dm81xx_l4_ls_hwmod,
- .slave = &dm814x_timer1_hwmod,
- .clk = "sysclk6_ck",
- .user = OCP_USER_MPU,
-};
-
-static struct omap_hwmod dm816x_timer1_hwmod = {
- .name = "timer1",
- .clkdm_name = "alwon_l3s_clkdm",
- .main_clk = "timer1_fck",
- .prcm = {
- .omap4 = {
- .clkctrl_offs = DM816X_CM_ALWON_TIMER_1_CLKCTRL,
- .modulemode = MODULEMODE_SWCTRL,
- },
- },
- .class = &dm816x_timer_hwmod_class,
-};
-
-static struct omap_hwmod_ocp_if dm816x_l4_ls__timer1 = {
- .master = &dm81xx_l4_ls_hwmod,
- .slave = &dm816x_timer1_hwmod,
- .clk = "sysclk6_ck",
- .user = OCP_USER_MPU,
-};
-
-static struct omap_hwmod dm814x_timer2_hwmod = {
- .name = "timer2",
- .clkdm_name = "alwon_l3s_clkdm",
- .main_clk = "timer2_fck",
- .class = &dm816x_timer_hwmod_class,
- .flags = HWMOD_NO_IDLEST,
-};
-
-static struct omap_hwmod_ocp_if dm814x_l4_ls__timer2 = {
- .master = &dm81xx_l4_ls_hwmod,
- .slave = &dm814x_timer2_hwmod,
- .clk = "sysclk6_ck",
- .user = OCP_USER_MPU,
-};
-
-static struct omap_hwmod dm816x_timer2_hwmod = {
- .name = "timer2",
- .clkdm_name = "alwon_l3s_clkdm",
- .main_clk = "timer2_fck",
- .prcm = {
- .omap4 = {
- .clkctrl_offs = DM816X_CM_ALWON_TIMER_2_CLKCTRL,
- .modulemode = MODULEMODE_SWCTRL,
- },
- },
- .class = &dm816x_timer_hwmod_class,
-};
-
-static struct omap_hwmod_ocp_if dm816x_l4_ls__timer2 = {
- .master = &dm81xx_l4_ls_hwmod,
- .slave = &dm816x_timer2_hwmod,
- .clk = "sysclk6_ck",
- .user = OCP_USER_MPU,
-};
-
static struct omap_hwmod dm816x_timer3_hwmod = {
.name = "timer3",
.clkdm_name = "alwon_l3s_clkdm",
@@ -1288,8 +1218,6 @@ static struct omap_hwmod_ocp_if *dm814x_hwmod_ocp_ifs[] __initdata = {
&dm814x_l4_ls__mmc1,
&dm814x_l4_ls__mmc2,
&ti81xx_l4_ls__rtc,
- &dm814x_l4_ls__timer1,
- &dm814x_l4_ls__timer2,
&dm81xx_alwon_l3_slow__gpmc,
&dm814x_default_l3_slow__usbss,
&dm814x_alwon_l3_med__mmc3,
@@ -1318,8 +1246,6 @@ static struct omap_hwmod_ocp_if *dm816x_hwmod_ocp_ifs[] __initdata = {
&dm81xx_l4_ls__elm,
&ti81xx_l4_ls__rtc,
&dm816x_l4_ls__mmc1,
- &dm816x_l4_ls__timer1,
- &dm816x_l4_ls__timer2,
&dm816x_l4_ls__timer3,
&dm816x_l4_ls__timer4,
&dm816x_l4_ls__timer5,
--
2.26.2