From: Stefan Kerkmann <s.kerkmann@pengutronix.de>
To: Sascha Hauer <s.hauer@pengutronix.de>,
"open list:BAREBOX" <barebox@lists.infradead.org>
Cc: Stefan Kerkmann <s.kerkmann@pengutronix.de>
Subject: [PATCH v3 6/8] ARM: socfpga: agilex5: re-init pbl clocksource
Date: Mon, 17 Aug 2026 16:01:17 +0200 [thread overview]
Message-ID: <20260817-feature-pbl-get-time-ns-v3-6-9874c1438855@pengutronix.de> (raw)
In-Reply-To: <20260817-feature-pbl-get-time-ns-v3-0-9874c1438855@pengutronix.de>
After changing the cntfrq register the global PBL clocksource must be
re-initialized. The inline assembly was dropped in favor of the
set_cntfrq function, the subsequent read is a no-op and dropped without
a replacement.
Signed-off-by: Stefan Kerkmann <s.kerkmann@pengutronix.de>
---
arch/arm/mach-socfpga/agilex5-clock-manager.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/arch/arm/mach-socfpga/agilex5-clock-manager.c b/arch/arm/mach-socfpga/agilex5-clock-manager.c
index 4ce7a2d4a2..0b0425efc1 100644
--- a/arch/arm/mach-socfpga/agilex5-clock-manager.c
+++ b/arch/arm/mach-socfpga/agilex5-clock-manager.c
@@ -5,6 +5,7 @@
#include <common.h>
#include <io.h>
+#include <asm/hardware/arm_architected_timer.h>
#include <asm/system.h>
#include <dt-bindings/clock/intel,agilex5-clkmgr.h>
#include <linux/bitops.h>
@@ -252,8 +253,6 @@ static void clk_basic_init(struct socfpga_clk_plat *plat,
{
u32 vcocalib;
u32 cntfrq = COUNTER_FREQUENCY_REAL;
- u32 counter_freq = 0;
-
if (!cfg)
return;
@@ -361,8 +360,8 @@ static void clk_basic_init(struct socfpga_clk_plat *plat,
/* Update with accurate clock frequency */
if (current_el() == 3) {
- asm volatile("msr cntfrq_el0, %0" : : "r" (cntfrq) : "memory");
- asm volatile("mrs %0, cntfrq_el0" : "=r" (counter_freq));
+ set_cntfrq(cntfrq);
+ arm_arch_timer_init(cntfrq);
}
/* Out of boot mode */
--
2.47.3
next prev parent reply other threads:[~2026-08-17 14:06 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-17 14:01 [PATCH v3 0/8] PBL: enable timeouts in read_poll_timeout macros Stefan Kerkmann
2026-08-17 14:01 ` [PATCH v3 1/8] RISC-V: setup_c: avoid clearing BSS twice Stefan Kerkmann
2026-08-17 14:01 ` [PATCH v3 2/8] ARM/ARM64/RISC-V: pbl: add constructor support Stefan Kerkmann
2026-08-18 12:08 ` [PATCH] amend! " Stefan Kerkmann
2026-08-19 9:39 ` [PATCH v3 2/8] " Sascha Hauer
2026-08-17 14:01 ` [PATCH v3 3/8] clocksource: allow re-init for same clock Stefan Kerkmann
2026-08-17 14:01 ` [PATCH v3 4/8] drivers: arm_architected_timer: refactor for pbl compatibility Stefan Kerkmann
2026-08-20 7:04 ` Sascha Hauer
2026-08-20 7:32 ` Stefan Kerkmann
2026-08-20 8:00 ` Sascha Hauer
2026-08-20 8:07 ` Stefan Kerkmann
2026-08-17 14:01 ` [PATCH v3 5/8] ARM: layerscape: re-init pbl clocksource Stefan Kerkmann
2026-08-17 15:42 ` Ahmad Fatoum
2026-08-20 6:59 ` Sascha Hauer
2026-08-20 8:06 ` Stefan Kerkmann
2026-08-17 14:01 ` Stefan Kerkmann [this message]
2026-08-17 14:01 ` [PATCH v3 7/8] ARM64: enable PBL_CLOCKSOURCE compatibility Stefan Kerkmann
2026-08-17 14:01 ` [PATCH v3 8/8] linux/iopoll: enable polled timeouts for PBL_CLOCKSOURCE Stefan Kerkmann
2026-08-19 7:03 ` [PATCH v3 0/8] PBL: enable timeouts in read_poll_timeout macros Sascha Hauer
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