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| author | Guo Ren <guoren@linux.alibaba.com> | 2022-01-30 21:56:34 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-02-23 11:58:41 +0100 |
| commit | 79497a6750eae4cdcd21eb6b330fb2001daddefc (patch) | |
| tree | 611ffb75b10bf53e1aec8b5643645c0a0ffe0976 | |
| parent | 8779326df60fd0990527f1f752598caf1bb6e8d6 (diff) | |
| download | linux-stable-79497a6750eae4cdcd21eb6b330fb2001daddefc.tar.gz linux-stable-79497a6750eae4cdcd21eb6b330fb2001daddefc.tar.bz2 linux-stable-79497a6750eae4cdcd21eb6b330fb2001daddefc.zip | |
irqchip/sifive-plic: Add missing thead,c900-plic match string
[ Upstream commit 1d4df649cbb4b26d19bea38ecff4b65b10a1bbca ]
The thead,c900-plic has been used in opensbi to distinguish
PLIC [1]. Although PLICs have the same behaviors in Linux,
they are different hardware with some custom initializing in
firmware(opensbi).
Qute opensbi patch commit-msg by Samuel:
The T-HEAD PLIC implementation requires setting a delegation bit
to allow access from S-mode. Now that the T-HEAD PLIC has its own
compatible string, set this bit automatically from the PLIC driver,
instead of reaching into the PLIC's MMIO space from another driver.
[1]: https://github.com/riscv-software-src/opensbi/commit/78c2b19218bd62653b9fb31623a42ced45f38ea6
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Cc: Anup Patel <anup@brainfault.org>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Samuel Holland <samuel@sholland.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Samuel Holland <samuel@sholland.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220130135634.1213301-3-guoren@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/irqchip/irq-sifive-plic.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/irqchip/irq-sifive-plic.c b/drivers/irqchip/irq-sifive-plic.c index 532e9d68c704..767cdd3f773b 100644 --- a/drivers/irqchip/irq-sifive-plic.c +++ b/drivers/irqchip/irq-sifive-plic.c @@ -258,3 +258,4 @@ out_iounmap: IRQCHIP_DECLARE(sifive_plic, "sifive,plic-1.0.0", plic_init); IRQCHIP_DECLARE(riscv_plic0, "riscv,plic0", plic_init); /* for legacy systems */ +IRQCHIP_DECLARE(thead_c900_plic, "thead,c900-plic", plic_init); /* for firmware driver */ |