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| author | Icenowy Zheng <zhengxingda@iscas.ac.cn> | 2026-04-07 19:01:43 +0300 |
|---|---|---|
| committer | Inochi Amaoto <inochiama@gmail.com> | 2026-06-03 05:09:38 +0300 |
| commit | 903a9364e40563faf4730dc63ad7446246f494ff (patch) | |
| tree | 49a978e9fcedb112bd5a01b2d166302956705b0c /include/linux | |
| parent | a7e658907686528fe06a11828b04a3e42df9ef18 (diff) | |
| download | linux-903a9364e40563faf4730dc63ad7446246f494ff.tar.xz | |
riscv: dts: sophgo: reduce SG2042 MSI count to 16
The SG2042 MSI controller has one 32-bit doorbell register, and each bit
corresponds to an interrupt. At a glance, it seems that the MSI
controller can support 32 interrupts; however the PCI MSI capability
only supports 16-bit messages, which makes the high 16 interrupts
unusable in such way.
Reduce the MSI count to 16 to prevent producing MSI message values that
cannot fit 16-bit integers.
Signed-off-by: Icenowy Zheng <zhengxingda@iscas.ac.cn>
Reviewed-by: Chen Wang <unicorn_wang@outlook.com>
Tested-by: Chen Wang <unicorn_wang@outlook.com> on Pioneerbox.
Link: https://patch.msgid.link/20260407160143.1182430-1-zhengxingda@iscas.ac.cn
Signed-off-by: Inochi Amaoto <inochiama@gmail.com>
Signed-off-by: Chen Wang <unicorn_wang@outlook.com>
Diffstat (limited to 'include/linux')
0 files changed, 0 insertions, 0 deletions