diff options
Diffstat (limited to 'target/linux/realtek/patches-5.15/309-cevt-rtl9300-support.patch')
| -rw-r--r-- | target/linux/realtek/patches-5.15/309-cevt-rtl9300-support.patch | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/target/linux/realtek/patches-5.15/309-cevt-rtl9300-support.patch b/target/linux/realtek/patches-5.15/309-cevt-rtl9300-support.patch new file mode 100644 index 0000000000..93d69c07cf --- /dev/null +++ b/target/linux/realtek/patches-5.15/309-cevt-rtl9300-support.patch @@ -0,0 +1,54 @@ +From 775d903216a08c2a8009863d2f9c33f62657ba94 Mon Sep 17 00:00:00 2001 +From: Birger Koblitz <git@birger-koblitz.de> +Date: Thu, 6 Jan 2022 20:27:01 +0100 +Subject: [PATCH] realtek: Replace the RTL9300 generic timer with a CEVT timer + +The RTL9300 has a broken R4K MIPS timer interrupt, however, the +R4K clocksource works. We replace the RTL9300 timer with a +Clock Event Timer (CEVT), which is VSMP aware and can be instantiated +as part of brining a VSMTP cpu up instead of the R4K CEVT source. +For this we place the RTL9300 CEVT timer in arch/mips/kernel +together with other MIPS CEVT timers, initialize the SoC IRQs +from a modified smp-mt.c and instantiate each timer as part +of the MIPS time setup in arch/mips/include/asm/time.h instead +of the R4K CEVT, similarly as is done by other MIPS CEVT timers. + +Submitted-by: Birger Koblitz <git@birger-koblitz.de> +--- + arch/mips/kernel/Makefile | 1 + + arch/mips/include/asm/time.h | 7 +++++++ + 2 files changed, 8 insertions(+) + +--- a/arch/mips/kernel/Makefile ++++ b/arch/mips/kernel/Makefile +@@ -27,6 +27,7 @@ obj-$(CONFIG_CEVT_BCM1480) += cevt-bcm14 + obj-$(CONFIG_CEVT_R4K) += cevt-r4k.o + obj-$(CONFIG_CEVT_DS1287) += cevt-ds1287.o + obj-$(CONFIG_CEVT_GT641XX) += cevt-gt641xx.o ++obj-$(CONFIG_CEVT_RTL9300) += cevt-rtl9300.o + obj-$(CONFIG_CEVT_SB1250) += cevt-sb1250.o + obj-$(CONFIG_CEVT_TXX9) += cevt-txx9.o + obj-$(CONFIG_CSRC_BCM1480) += csrc-bcm1480.o +--- a/arch/mips/include/asm/time.h ++++ b/arch/mips/include/asm/time.h +@@ -15,6 +15,8 @@ + #include <linux/clockchips.h> + #include <linux/clocksource.h> + ++extern void rtl9300_clockevent_init(void); ++ + extern spinlock_t rtc_lock; + + /* +@@ -43,6 +45,11 @@ extern int r4k_clockevent_init(void); + + static inline int mips_clockevent_init(void) + { ++#ifdef CONFIG_CEVT_RTL9300 ++ rtl9300_clockevent_init(); ++ return 0; ++#endif ++ + #ifdef CONFIG_CEVT_R4K + return r4k_clockevent_init(); + #else |