[Bug 1073193] New: No ttyS4 on Pine64
http://bugzilla.opensuse.org/show_bug.cgi?id=1073193 Bug ID: 1073193 Summary: No ttyS4 on Pine64 Classification: openSUSE Product: openSUSE Tumbleweed Version: Current Hardware: aarch64 OS: openSUSE Factory Status: NEW Severity: Normal Priority: P5 - None Component: Kernel Assignee: afaerber@suse.com Reporter: afaerber@suse.com QA Contact: qa-bugs@suse.de CC: agraf@suse.com, mbrugger@suse.com, pmladek@suse.com, stefan.bruens@rwth-aachen.de, yousaf.kaukab@suse.com Found By: --- Blocker: --- When enabling the uart4 node in the Pine64's Device Tree, there is no /dev/ttyS4 device available. No related error messages apart from deferred pinctrl probing. UART3 works fine as /dev/ttyS3. Workaround: none (use a different UART if you can) I am guessing that limiting us to four 8250 UARTs causes further UARTs to be silently ignored: CONFIG_SERIAL_8250_NR_UARTS=4 CONFIG_SERIAL_8250_RUNTIME_UARTS=4 We should probably revise those numbers. -- You are receiving this mail because: You are on the CC list for the bug.
http://bugzilla.opensuse.org/show_bug.cgi?id=1073193 http://bugzilla.opensuse.org/show_bug.cgi?id=1073193#c1 --- Comment #1 from Andreas Färber <afaerber@suse.com> --- A potential workaround might be to tweak the uart4's Device Tree alias to something less than serial4, e.g. serial3 so that it shows up as ttyS3. -- You are receiving this mail because: You are on the CC list for the bug.
http://bugzilla.opensuse.org/show_bug.cgi?id=1073193 http://bugzilla.opensuse.org/show_bug.cgi?id=1073193#c2 --- Comment #2 from Petr Mladek <pmladek@suse.com> --- We already allow 32 serial ports on x86_64 to support multiport serial cards, see the bug #652954 I do not see any problem with increasing the default even for arm. I am just not sure what would be a reasonable choice: 8, 16, or 32? BTW: We might want to increase this limit even for power. I see the following in SLE15 source git: $> git grep SERIAL_8250_.*_UARTS config/arm64/default:CONFIG_SERIAL_8250_NR_UARTS=4 config/arm64/default:CONFIG_SERIAL_8250_RUNTIME_UARTS=4 config/ppc64le/default:CONFIG_SERIAL_8250_NR_UARTS=4 config/ppc64le/default:CONFIG_SERIAL_8250_RUNTIME_UARTS=4 config/x86_64/default:CONFIG_SERIAL_8250_NR_UARTS=32 config/x86_64/default:CONFIG_SERIAL_8250_RUNTIME_UARTS=32 And in upstream (arm, powerpc, x86): $> git grep SERIAL_8250_.*_UARTS arch/arm/configs/aspeed_g4_defconfig:CONFIG_SERIAL_8250_NR_UARTS=6 arch/arm/configs/aspeed_g4_defconfig:CONFIG_SERIAL_8250_RUNTIME_UARTS=6 arch/arm/configs/aspeed_g5_defconfig:CONFIG_SERIAL_8250_NR_UARTS=6 arch/arm/configs/aspeed_g5_defconfig:CONFIG_SERIAL_8250_RUNTIME_UARTS=6 arch/arm/configs/davinci_all_defconfig:CONFIG_SERIAL_8250_NR_UARTS=3 arch/arm/configs/davinci_all_defconfig:CONFIG_SERIAL_8250_RUNTIME_UARTS=3 arch/arm/configs/dove_defconfig:CONFIG_SERIAL_8250_RUNTIME_UARTS=2 arch/arm/configs/gemini_defconfig:CONFIG_SERIAL_8250_NR_UARTS=1 arch/arm/configs/gemini_defconfig:CONFIG_SERIAL_8250_RUNTIME_UARTS=1 arch/arm/configs/hisi_defconfig:CONFIG_SERIAL_8250_NR_UARTS=2 arch/arm/configs/hisi_defconfig:CONFIG_SERIAL_8250_RUNTIME_UARTS=2 arch/arm/configs/iop13xx_defconfig:CONFIG_SERIAL_8250_NR_UARTS=2 arch/arm/configs/ixp4xx_defconfig:CONFIG_SERIAL_8250_NR_UARTS=2 arch/arm/configs/moxart_defconfig:CONFIG_SERIAL_8250_NR_UARTS=1 arch/arm/configs/moxart_defconfig:CONFIG_SERIAL_8250_RUNTIME_UARTS=1 arch/arm/configs/multi_v5_defconfig:CONFIG_SERIAL_8250_NR_UARTS=6 arch/arm/configs/multi_v5_defconfig:CONFIG_SERIAL_8250_RUNTIME_UARTS=6 arch/arm/configs/mv78xx0_defconfig:CONFIG_SERIAL_8250_RUNTIME_UARTS=2 arch/arm/configs/mvebu_v5_defconfig:CONFIG_SERIAL_8250_RUNTIME_UARTS=2 arch/arm/configs/nuc910_defconfig:CONFIG_SERIAL_8250_NR_UARTS=1 arch/arm/configs/nuc950_defconfig:CONFIG_SERIAL_8250_NR_UARTS=1 arch/arm/configs/nuc960_defconfig:CONFIG_SERIAL_8250_NR_UARTS=1 arch/arm/configs/omap1_defconfig:CONFIG_SERIAL_8250_NR_UARTS=3 arch/arm/configs/omap1_defconfig:CONFIG_SERIAL_8250_RUNTIME_UARTS=3 arch/arm/configs/omap2plus_defconfig:CONFIG_SERIAL_8250_NR_UARTS=32 arch/arm/configs/omap2plus_defconfig:CONFIG_SERIAL_8250_RUNTIME_UARTS=6 arch/arm/configs/orion5x_defconfig:CONFIG_SERIAL_8250_RUNTIME_UARTS=2 arch/arm/configs/pxa_defconfig:CONFIG_SERIAL_8250_NR_UARTS=7 arch/arm/configs/pxa_defconfig:CONFIG_SERIAL_8250_RUNTIME_UARTS=7 arch/arm/configs/rpc_defconfig:CONFIG_SERIAL_8250_NR_UARTS=16 arch/arm/configs/rpc_defconfig:CONFIG_SERIAL_8250_RUNTIME_UARTS=8 arch/arm/configs/s3c2410_defconfig:CONFIG_SERIAL_8250_NR_UARTS=8 arch/arm/configs/socfpga_defconfig:CONFIG_SERIAL_8250_NR_UARTS=2 arch/arm/configs/socfpga_defconfig:CONFIG_SERIAL_8250_RUNTIME_UARTS=2 arch/arm/configs/sunxi_defconfig:CONFIG_SERIAL_8250_NR_UARTS=8 arch/arm/configs/sunxi_defconfig:CONFIG_SERIAL_8250_RUNTIME_UARTS=8 arch/arm/configs/viper_defconfig:CONFIG_SERIAL_8250_NR_UARTS=5 arch/arm/configs/viper_defconfig:CONFIG_SERIAL_8250_RUNTIME_UARTS=5 arch/arm/configs/zeus_defconfig:CONFIG_SERIAL_8250_NR_UARTS=7 arch/arm/configs/zeus_defconfig:CONFIG_SERIAL_8250_RUNTIME_UARTS=7 arch/powerpc/configs/44x/bluestone_defconfig:CONFIG_SERIAL_8250_NR_UARTS=2 arch/powerpc/configs/44x/bluestone_defconfig:CONFIG_SERIAL_8250_RUNTIME_UARTS=2 arch/powerpc/configs/44x/eiger_defconfig:CONFIG_SERIAL_8250_NR_UARTS=2 arch/powerpc/configs/44x/eiger_defconfig:CONFIG_SERIAL_8250_RUNTIME_UARTS=2 arch/powerpc/configs/44x/fsp2_defconfig:CONFIG_SERIAL_8250_NR_UARTS=32 arch/powerpc/configs/44x/fsp2_defconfig:CONFIG_SERIAL_8250_RUNTIME_UARTS=32 arch/powerpc/configs/44x/redwood_defconfig:CONFIG_SERIAL_8250_NR_UARTS=1 arch/powerpc/configs/44x/redwood_defconfig:CONFIG_SERIAL_8250_RUNTIME_UARTS=1 arch/powerpc/configs/83xx/sbc834x_defconfig:CONFIG_SERIAL_8250_NR_UARTS=2 arch/powerpc/configs/83xx/sbc834x_defconfig:CONFIG_SERIAL_8250_RUNTIME_UARTS=2 arch/powerpc/configs/85xx-hw.config:CONFIG_SERIAL_8250_NR_UARTS=6 arch/powerpc/configs/85xx-hw.config:CONFIG_SERIAL_8250_RUNTIME_UARTS=6 arch/powerpc/configs/85xx/ge_imp3a_defconfig:CONFIG_SERIAL_8250_NR_UARTS=2 arch/powerpc/configs/85xx/ge_imp3a_defconfig:CONFIG_SERIAL_8250_RUNTIME_UARTS=2 arch/powerpc/configs/85xx/socrates_defconfig:CONFIG_SERIAL_8250_NR_UARTS=2 arch/powerpc/configs/85xx/socrates_defconfig:CONFIG_SERIAL_8250_RUNTIME_UARTS=2 arch/powerpc/configs/85xx/xes_mpc85xx_defconfig:CONFIG_SERIAL_8250_NR_UARTS=2 arch/powerpc/configs/85xx/xes_mpc85xx_defconfig:CONFIG_SERIAL_8250_RUNTIME_UARTS=2 arch/powerpc/configs/86xx-hw.config:CONFIG_SERIAL_8250_NR_UARTS=5 arch/powerpc/configs/86xx-hw.config:CONFIG_SERIAL_8250_RUNTIME_UARTS=5 arch/powerpc/configs/mvme5100_defconfig:CONFIG_SERIAL_8250_NR_UARTS=10 arch/powerpc/configs/ppc6xx_defconfig:CONFIG_SERIAL_8250_NR_UARTS=32 arch/powerpc/configs/storcenter_defconfig:CONFIG_SERIAL_8250_NR_UARTS=2 arch/powerpc/configs/storcenter_defconfig:CONFIG_SERIAL_8250_RUNTIME_UARTS=2 arch/x86/configs/i386_defconfig:CONFIG_SERIAL_8250_NR_UARTS=32 arch/x86/configs/x86_64_defconfig:CONFIG_SERIAL_8250_NR_UARTS=32 -- You are receiving this mail because: You are on the CC list for the bug.
http://bugzilla.opensuse.org/show_bug.cgi?id=1073193 http://bugzilla.opensuse.org/show_bug.cgi?id=1073193#c3 Andreas Färber <afaerber@suse.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |IN_PROGRESS --- Comment #3 from Andreas Färber <afaerber@suse.com> --- Thanks, I'll bump SERIAL_8250_NR_UARTS to 32 for all applicable architectures, including i386 pae, for consistency. Not knowing this driver too well, I'm doing a test build for whether we can lower SERIAL_8250_RUNTIME_UARTS to 0 on Arm platforms while at it. -- You are receiving this mail because: You are on the CC list for the bug.
http://bugzilla.opensuse.org/show_bug.cgi?id=1073193 http://bugzilla.opensuse.org/show_bug.cgi?id=1073193#c4 --- Comment #4 from Andreas Färber <afaerber@suse.com> --- Booting with 8250.nr_uarts=0 results in no serial console output after efistub and no /dev/ttyS* devices. So we'll need to bump SERIAL_8250_RUNTIME_UARTS, too. -- You are receiving this mail because: You are on the CC list for the bug.
http://bugzilla.opensuse.org/show_bug.cgi?id=1073193 http://bugzilla.opensuse.org/show_bug.cgi?id=1073193#c5 --- Comment #5 from Andreas Färber <afaerber@suse.com> --- Patches merged into stable branch, but didn't make today's Kernel:stable. -- You are receiving this mail because: You are on the CC list for the bug.
http://bugzilla.opensuse.org/show_bug.cgi?id=1073193 http://bugzilla.opensuse.org/show_bug.cgi?id=1073193#c6 Andreas Färber <afaerber@suse.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|IN_PROGRESS |RESOLVED Resolution|--- |FIXED --- Comment #6 from Andreas Färber <afaerber@suse.com> --- Verified that ttyS4 is usable now with a home-built kernel, so closing already. -- You are receiving this mail because: You are on the CC list for the bug.
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