Messages in this thread Patch in this message | ![/](/images/icornerl.gif) | | Date | Wed, 9 Oct 2019 12:53:50 -0700 (PDT) | From | Paul Walmsley <> | Subject | [PATCH] Documentation: admin-guide: add earlycon documentation for RISC-V |
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Kernels booting on RISC-V can specify "earlycon" with no options on the Linux command line, and the generic DT earlycon support will query the "chosen/stdout-path" property (if present) to determine which early console device to use. Document this appropriately in the admin-guide.
Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Christoph Hellwig <hch@lst.de> Cc: Andreas Schwab <schwab@suse.de> --- Documentation/admin-guide/kernel-parameters.txt | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index c7ac2f3ac99f..011fee969ece 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -990,6 +990,10 @@ [X86] When used with no options the early console is determined by the ACPI SPCR table. + [RISCV] When used with no options, the early + console is determined by the stdout-path + property in the device tree's chosen node. + cdns,<addr>[,options] Start an early, polled-mode console on a Cadence (xuartps) serial port at the specified address. Only -- 2.23.0
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