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55 lines
1.9 KiB
Diff
55 lines
1.9 KiB
Diff
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From 775d903216a08c2a8009863d2f9c33f62657ba94 Mon Sep 17 00:00:00 2001
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From: Birger Koblitz <git@birger-koblitz.de>
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Date: Thu, 6 Jan 2022 20:27:01 +0100
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Subject: [PATCH] realtek: Replace the RTL9300 generic timer with a CEVT timer
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The RTL9300 has a broken R4K MIPS timer interrupt, however, the
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R4K clocksource works. We replace the RTL9300 timer with a
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Clock Event Timer (CEVT), which is VSMP aware and can be instantiated
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as part of brining a VSMTP cpu up instead of the R4K CEVT source.
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For this we place the RTL9300 CEVT timer in arch/mips/kernel
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together with other MIPS CEVT timers, initialize the SoC IRQs
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from a modified smp-mt.c and instantiate each timer as part
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of the MIPS time setup in arch/mips/include/asm/time.h instead
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of the R4K CEVT, similarly as is done by other MIPS CEVT timers.
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Submitted-by: Birger Koblitz <git@birger-koblitz.de>
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---
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arch/mips/kernel/Makefile | 1 +
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arch/mips/include/asm/time.h | 7 +++++++
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2 files changed, 8 insertions(+)
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--- a/arch/mips/kernel/Makefile
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+++ b/arch/mips/kernel/Makefile
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@@ -27,6 +27,7 @@ obj-$(CONFIG_CEVT_BCM1480) += cevt-bcm14
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obj-$(CONFIG_CEVT_R4K) += cevt-r4k.o
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obj-$(CONFIG_CEVT_DS1287) += cevt-ds1287.o
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obj-$(CONFIG_CEVT_GT641XX) += cevt-gt641xx.o
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+obj-$(CONFIG_CEVT_RTL9300) += cevt-rtl9300.o
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obj-$(CONFIG_CEVT_SB1250) += cevt-sb1250.o
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obj-$(CONFIG_CEVT_TXX9) += cevt-txx9.o
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obj-$(CONFIG_CSRC_BCM1480) += csrc-bcm1480.o
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--- a/arch/mips/include/asm/time.h
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+++ b/arch/mips/include/asm/time.h
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@@ -15,6 +15,8 @@
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#include <linux/clockchips.h>
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#include <linux/clocksource.h>
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+extern void rtl9300_clockevent_init(void);
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+
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extern spinlock_t rtc_lock;
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/*
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@@ -43,6 +45,11 @@ extern int r4k_clockevent_init(void);
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static inline int mips_clockevent_init(void)
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{
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+#ifdef CONFIG_CEVT_RTL9300
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+ rtl9300_clockevent_init();
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+ return 0;
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+#endif
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+
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#ifdef CONFIG_CEVT_R4K
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return r4k_clockevent_init();
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#else
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