Merge tag 'timers-v6.2-rc1' of https://git.linaro.org/people/daniel.l…

…ezcano/linux into timers/core

Pull clockevent/source driver updates from Daniel Lezcano:

  - Add DT bindings for the Rockchip rk3128 timer (Johan Jonker)

  - Change the DT bindings for the npcm7xx timer in order to specify
    multiple clocks and enable the clock for the timer1 on WPCM450
    (Jonathan Neuschäfer)

  - Fix the timer duration being too long the ARM architected timer in
    order to prevent an integer overflow leading to a negative value and
    an immediate interruption (Joe Korty)

  - Fix an unused pointer warning reported by lkp and some cleanups in
    the timer TI dm (Tony Lindgren)

  - Fix a missing call to clk_disable_unprepare() in the error path at
    init time on the timer TI dm (Yang Yingliang)

  - Use kstrtobool() instead of strtobool() in the ARM architected timer
    (Christophe JAILLET)

  - Add DT bindings for r8a779g0 on Renesas platform (Wolfram Sang)

Link: https://lore.kernel.org/all/3c4c3bb2-b849-0c87-0948-8a36984bdde4@linaro.org

Documentation/devicetree/bindings/timer/nuvoton,npcm7xx-timer.yaml

@@ -25,7 +25,13 @@ properties:
       - description: The timer interrupt of timer 0
 
   clocks:
-    maxItems: 1
+    items:
+      - description: The reference clock for timer 0
+      - description: The reference clock for timer 1
+      - description: The reference clock for timer 2
+      - description: The reference clock for timer 3
+      - description: The reference clock for timer 4
+    minItems: 1
 
 required:
   - compatible

Documentation/devicetree/bindings/timer/renesas,cmt.yaml

@@ -102,12 +102,14 @@ properties:
           - enum:
               - renesas,r8a779a0-cmt0     # 32-bit CMT0 on R-Car V3U
               - renesas,r8a779f0-cmt0     # 32-bit CMT0 on R-Car S4-8
+              - renesas,r8a779g0-cmt0     # 32-bit CMT0 on R-Car V4H
           - const: renesas,rcar-gen4-cmt0 # 32-bit CMT0 on R-Car Gen4
 
       - items:
           - enum:
               - renesas,r8a779a0-cmt1     # 48-bit CMT on R-Car V3U
               - renesas,r8a779f0-cmt1     # 48-bit CMT on R-Car S4-8
+              - renesas,r8a779g0-cmt1     # 48-bit CMT on R-Car V4H
           - const: renesas,rcar-gen4-cmt1 # 48-bit CMT on R-Car Gen4
 
   reg:

Documentation/devicetree/bindings/timer/renesas,tmu.yaml

@@ -38,6 +38,7 @@ properties:
           - renesas,tmu-r8a77995 # R-Car D3
           - renesas,tmu-r8a779a0 # R-Car V3U
           - renesas,tmu-r8a779f0 # R-Car S4-8
+          - renesas,tmu-r8a779g0 # R-Car V4H
       - const: renesas,tmu
 
   reg:

Documentation/devicetree/bindings/timer/rockchip,rk-timer.yaml

@@ -18,6 +18,7 @@ properties:
           - enum:
               - rockchip,rv1108-timer
               - rockchip,rk3036-timer
+              - rockchip,rk3128-timer
               - rockchip,rk3188-timer
               - rockchip,rk3228-timer
               - rockchip,rk3229-timer

drivers/clocksource/arm_arch_timer.c

@@ -18,6 +18,7 @@
 #include <linux/clocksource.h>
 #include <linux/clocksource_ids.h>
 #include <linux/interrupt.h>
+#include <linux/kstrtox.h>
 #include <linux/of_irq.h>
 #include <linux/of_address.h>
 #include <linux/io.h>
@@ -97,7 +98,7 @@ static bool evtstrm_enable __ro_after_init = IS_ENABLED(CONFIG_ARM_ARCH_TIMER_EV
 
 static int __init early_evtstrm_cfg(char *buf)
 {
-	return strtobool(buf, &evtstrm_enable);
+	return kstrtobool(buf, &evtstrm_enable);
 }
 early_param("clocksource.arm_arch_timer.evtstrm", early_evtstrm_cfg);
 
@@ -806,15 +807,18 @@ static u64 __arch_timer_check_delta(void)
 		/*
 		 * XGene-1 implements CVAL in terms of TVAL, meaning
 		 * that the maximum timer range is 32bit. Shame on them.
+		 *
+		 * Note that TVAL is signed, thus has only 31 of its
+		 * 32 bits to express magnitude.
 		 */
 		MIDR_ALL_VERSIONS(MIDR_CPU_MODEL(ARM_CPU_IMP_APM,
 						 APM_CPU_PART_POTENZA)),
 		{},
 	};
 
 	if (is_midr_in_range_list(read_cpuid_id(), broken_cval_midrs)) {
-		pr_warn_once("Broken CNTx_CVAL_EL1, limiting width to 32bits");
-		return CLOCKSOURCE_MASK(32);
+		pr_warn_once("Broken CNTx_CVAL_EL1, using 32 bit TVAL instead.\n");
+		return CLOCKSOURCE_MASK(31);
 	}
 #endif
 	return CLOCKSOURCE_MASK(arch_counter_get_width());

drivers/clocksource/timer-npcm7xx.c

@@ -188,6 +188,7 @@ static void __init npcm7xx_clocksource_init(void)
 
 static int __init npcm7xx_timer_init(struct device_node *np)
 {
+	struct clk *clk;
 	int ret;
 
 	ret = timer_of_init(np, &npcm7xx_to);
@@ -199,6 +200,15 @@ static int __init npcm7xx_timer_init(struct device_node *np)
 	npcm7xx_to.of_clk.rate = npcm7xx_to.of_clk.rate /
 		(NPCM7XX_Tx_MIN_PRESCALE + 1);
 
+	/* Enable the clock for timer1, if it exists */
+	clk = of_clk_get(np, 1);
+	if (clk) {
+		if (!IS_ERR(clk))
+			clk_prepare_enable(clk);
+		else
+			pr_warn("%pOF: Failed to get clock for timer1: %pe", np, clk);
+	}
+
 	npcm7xx_clocksource_init();
 	npcm7xx_clockevents_init();
 

drivers/clocksource/timer-ti-dm-systimer.c

@@ -345,8 +345,10 @@ static int __init dmtimer_systimer_init_clock(struct dmtimer_systimer *t,
 		return error;
 
 	r = clk_get_rate(clock);
-	if (!r)
+	if (!r) {
+		clk_disable_unprepare(clock);
 		return -ENODEV;
+	}
 
 	if (is_ick)
 		t->ick = clock;

drivers/clocksource/timer-ti-dm.c

@@ -633,17 +633,30 @@ static struct omap_dm_timer *omap_dm_timer_request_by_node(struct device_node *n
 static int omap_dm_timer_free(struct omap_dm_timer *cookie)
 {
 	struct dmtimer *timer;
+	struct device *dev;
+	int rc;
 
 	timer = to_dmtimer(cookie);
 	if (unlikely(!timer))
 		return -EINVAL;
 
 	WARN_ON(!timer->reserved);
 	timer->reserved = 0;
+
+	dev = &timer->pdev->dev;
+	rc = pm_runtime_resume_and_get(dev);
+	if (rc)
+		return rc;
+
+	/* Clear timer configuration */
+	dmtimer_write(timer, OMAP_TIMER_CTRL_REG, 0);
+
+	pm_runtime_put_sync(dev);
+
 	return 0;
 }
 
-int omap_dm_timer_get_irq(struct omap_dm_timer *cookie)
+static int omap_dm_timer_get_irq(struct omap_dm_timer *cookie)
 {
 	struct dmtimer *timer = to_dmtimer(cookie);
 	if (timer)
@@ -1135,6 +1148,10 @@ static int omap_dm_timer_probe(struct platform_device *pdev)
 			goto err_disable;
 		}
 		__omap_dm_timer_init_regs(timer);
+
+		/* Clear timer configuration */
+		dmtimer_write(timer, OMAP_TIMER_CTRL_REG, 0);
+
 		pm_runtime_put(dev);
 	}
 
@@ -1258,7 +1275,7 @@ static struct platform_driver omap_dm_timer_driver = {
 	.remove = omap_dm_timer_remove,
 	.driver = {
 		.name   = "omap_timer",
-		.of_match_table = of_match_ptr(omap_timer_match),
+		.of_match_table = omap_timer_match,
 		.pm = &omap_dm_timer_pm_ops,
 	},
 };

include/clocksource/timer-ti-dm.h

@@ -62,8 +62,6 @@
 struct omap_dm_timer {
 };
 
-int omap_dm_timer_get_irq(struct omap_dm_timer *timer);
-
 u32 omap_dm_timer_modify_idlect_mask(u32 inputmask);
 
 /*