diff options
| author | Guo Ren <guoren@linux.alibaba.com> | 2022-01-30 14:56:34 +0100 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2022-02-02 11:49:29 +0100 |
| commit | 1d4df649cbb4b26d19bea38ecff4b65b10a1bbca (patch) | |
| tree | a50f785221967a3bb3680e1679aaf3174effaa56 /drivers/irqchip | |
| parent | dt-bindings: update riscv plic compatible string (diff) | |
| download | linux-1d4df649cbb4b26d19bea38ecff4b65b10a1bbca.tar.xz linux-1d4df649cbb4b26d19bea38ecff4b65b10a1bbca.zip | |
irqchip/sifive-plic: Add missing thead,c900-plic match string
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
Diffstat (limited to 'drivers/irqchip')
| -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 259065d271ef..09cc98266d30 100644 --- a/drivers/irqchip/irq-sifive-plic.c +++ b/drivers/irqchip/irq-sifive-plic.c @@ -398,3 +398,4 @@ out_free_priv: 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 */ |