diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-11-05 08:13:19 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-11-05 08:13:19 -0700 |
| commit | a3f36773802d44d1e50e7c4c09b3e17018581d11 (patch) | |
| tree | 20cd7768ce06c0d8249ff45f35d1ed59fcc325ae /arch/mips/pci/fixup-cobalt.c | |
| parent | d4439a1189f93d0ac1eaf0197db8e6b3e197d5c7 (diff) | |
| parent | 36de23a4c5f0b61ceb4812b535422fa6c6e97447 (diff) | |
| download | linux-a3f36773802d44d1e50e7c4c09b3e17018581d11.tar.gz linux-a3f36773802d44d1e50e7c4c09b3e17018581d11.tar.bz2 linux-a3f36773802d44d1e50e7c4c09b3e17018581d11.zip | |
Merge tag 'mips_5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux
Pull MIPS updates from Thomas Bogendoerfer:
- added printing of CPU options for /proc/cpuinfo
- removed support for Netlogic SOCs
- fixes and cleanup
* tag 'mips_5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
MIPS: Cobalt: Explain GT64111 early PCI fixup
mips: fix HUGETLB function without THP enabled
mips: cm: Convert to bitfield API to fix out-of-bounds access
MIPS: Remove NETLOGIC support
MIPS: kernel: proc: add CPU option reporting
MIPS: kernel: proc: use seq_puts instead of seq_printf
MIPS: kernel: proc: fix trivial style errors
MIPS: Fix assembly error from MIPSr2 code used within MIPS_ISA_ARCH_LEVEL
MIPS: octeon: Remove unused functions
MIPS: Loongson64: Add of_node_put() before break
bcm47xx: Replace printk(KERN_ALERT ... pci_devname(dev)) with pci_alert()
bcm47xx: Get rid of redundant 'else'
MIPS: sni: Fix the build
MIPS: Avoid macro redefinitions
MIPS: loongson64: Fix no screen display during boot-up
MIPS: loongson64: make CPU_LOONGSON64 depends on MIPS_FP_SUPPORT
Diffstat (limited to 'arch/mips/pci/fixup-cobalt.c')
| -rw-r--r-- | arch/mips/pci/fixup-cobalt.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/mips/pci/fixup-cobalt.c b/arch/mips/pci/fixup-cobalt.c index 44be65c3e6bb..00206ff52988 100644 --- a/arch/mips/pci/fixup-cobalt.c +++ b/arch/mips/pci/fixup-cobalt.c @@ -36,6 +36,21 @@ #define VIA_COBALT_BRD_ID_REG 0x94 #define VIA_COBALT_BRD_REG_to_ID(reg) ((unsigned char)(reg) >> 4) +/* + * Default value of PCI Class Code on GT64111 is PCI_CLASS_MEMORY_OTHER (0x0580) + * instead of PCI_CLASS_BRIDGE_HOST (0x0600). Galileo explained this choice in + * document "GT-64111 System Controller for RC4640, RM523X and VR4300 CPUs", + * section "6.5.3 PCI Autoconfiguration at RESET": + * + * Some PCs refuse to configure host bridges if they are found plugged into + * a PCI slot (ask the BIOS vendors why...). The "Memory Controller" Class + * Code does not cause a problem for these non-compliant BIOSes, so we used + * this as the default in the GT-64111. + * + * So fix the incorrect default value of PCI Class Code. More details are on: + * https://lore.kernel.org/r/20211102154831.xtrlgrmrizl5eidl@pali/ + * https://lore.kernel.org/r/20211102150201.GA11675@alpha.franken.de/ + */ static void qube_raq_galileo_early_fixup(struct pci_dev *dev) { if (dev->devfn == PCI_DEVFN(0, 0) && |