diff options
Diffstat (limited to 'target/linux/ramips/patches-5.10/320-MIPS-add-support-for-buggy-MT7621S-core-detection.patch')
-rw-r--r-- | target/linux/ramips/patches-5.10/320-MIPS-add-support-for-buggy-MT7621S-core-detection.patch | 74 |
1 files changed, 0 insertions, 74 deletions
diff --git a/target/linux/ramips/patches-5.10/320-MIPS-add-support-for-buggy-MT7621S-core-detection.patch b/target/linux/ramips/patches-5.10/320-MIPS-add-support-for-buggy-MT7621S-core-detection.patch deleted file mode 100644 index 0eb6676414..0000000000 --- a/target/linux/ramips/patches-5.10/320-MIPS-add-support-for-buggy-MT7621S-core-detection.patch +++ /dev/null @@ -1,74 +0,0 @@ -From 6decd1aad15f56b169217789630a0098b496de0e Mon Sep 17 00:00:00 2001 -From: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com> -Date: Wed, 7 Apr 2021 13:07:38 -0700 -Subject: [PATCH] MIPS: add support for buggy MT7621S core detection - -Most MT7621 SoCs have 2 cores, which is detected and supported properly -by CPS. - -Unfortunately, MT7621 SoC has a less common S variant with only one core. -On MT7621S, GCR_CONFIG still reports 2 cores, which leads to hangs when -starting SMP. CPULAUNCH registers can be used in that case to detect the -absence of the second core and override the GCR_CONFIG PCORES field. - -Rework a long-standing OpenWrt patch to override the value of -mips_cps_numcores on single-core MT7621 systems. - -Tested on a dual-core MT7621 device (Ubiquiti ER-X) and a single-core -MT7621 device (Netgear R6220). - -Original 4.14 OpenWrt patch: -Link: https://git.openwrt.org/?p=openwrt/openwrt.git;a=commitdiff;h=4cdbc90a376dd0555201c1434a2081e055e9ceb7 -Current 5.10 OpenWrt patch: -Link: https://git.openwrt.org/?p=openwrt/openwrt.git;a=blob;f=target/linux/ramips/patches-5.10/320-mt7621-core-detect-hack.patch;h=c63f0f4c1ec742e24d8480e80553863744b58f6a;hb=10267e17299806f9885d086147878f6c492cb904 - -Suggested-by: Felix Fietkau <nbd@nbd.name> -Signed-off-by: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com> -Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> ---- - arch/mips/include/asm/mips-cps.h | 23 ++++++++++++++++++++++- - 1 file changed, 22 insertions(+), 1 deletion(-) - ---- a/arch/mips/include/asm/mips-cps.h -+++ b/arch/mips/include/asm/mips-cps.h -@@ -10,6 +10,8 @@ - #include <linux/io.h> - #include <linux/types.h> - -+#include <asm/mips-boards/launch.h> -+ - extern unsigned long __cps_access_bad_size(void) - __compiletime_error("Bad size for CPS accessor"); - -@@ -165,11 +167,30 @@ static inline uint64_t mips_cps_cluster_ - */ - static inline unsigned int mips_cps_numcores(unsigned int cluster) - { -+ unsigned int ncores; -+ - if (!mips_cm_present()) - return 0; - - /* Add one before masking to handle 0xff indicating no cores */ -- return (mips_cps_cluster_config(cluster) + 1) & CM_GCR_CONFIG_PCORES; -+ ncores = (mips_cps_cluster_config(cluster) + 1) & CM_GCR_CONFIG_PCORES; -+ -+ if (IS_ENABLED(CONFIG_SOC_MT7621)) { -+ struct cpulaunch *launch; -+ -+ /* -+ * Ralink MT7621S SoC is single core, but the GCR_CONFIG method -+ * always reports 2 cores. Check the second core's LAUNCH_FREADY -+ * flag to detect if the second core is missing. This method -+ * only works before the core has been started. -+ */ -+ launch = (struct cpulaunch *)CKSEG0ADDR(CPULAUNCH); -+ launch += 2; /* MT7621 has 2 VPEs per core */ -+ if (!(launch->flags & LAUNCH_FREADY)) -+ ncores = 1; -+ } -+ -+ return ncores; - } - - /** |