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[PATCH for-6.2 07/25] armsse: Wire up systick cpuclk clock
From: |
Peter Maydell |
Subject: |
[PATCH for-6.2 07/25] armsse: Wire up systick cpuclk clock |
Date: |
Thu, 12 Aug 2021 10:33:38 +0100 |
Wire up the cpuclk for the systick devices to the SSE object's
existing mainclk clock.
We do not wire up the refclk because the SSE subsystems do not
provide a refclk. (This is documented in the IoTKit and SSE-200
TRMs; the SSE-300 TRM doesn't mention it but we assume it follows the
same approach.) When we update the systick device later to honour "no
refclk connected" this will fix a minor emulation inaccuracy for the
SSE-based boards.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
hw/arm/armsse.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/hw/arm/armsse.c b/hw/arm/armsse.c
index a1456cb0f42..70b52c3d4b9 100644
--- a/hw/arm/armsse.c
+++ b/hw/arm/armsse.c
@@ -995,6 +995,9 @@ static void armsse_realize(DeviceState *dev, Error **errp)
int j;
char *gpioname;
+ qdev_connect_clock_in(cpudev, "cpuclk", s->mainclk);
+ /* The SSE subsystems do not wire up a systick refclk */
+
qdev_prop_set_uint32(cpudev, "num-irq", s->exp_numirq + NUM_SSE_IRQS);
/*
* In real hardware the initial Secure VTOR is set from the INITSVTOR*
--
2.20.1
- Re: [PATCH for-6.2 05/25] hw/timer/armv7m_systick: Add input clocks, (continued)