Re: [PATCH 2/3] riscv: clint: Update the sifive clint ipi driver to support aclint
From: Bin Meng bmeng@tinylab.org Sent: Monday, June 12, 2023 3:36 PM To: u-boot@lists.denx.de Cc: Leo Yu-Chi Liang(梁育齊) ycliang@andestech.com; Rick Jian-Zhi Chen(陳建志) rick@andestech.com Subject: [PATCH 2/3] riscv: clint: Update the sifive clint ipi driver to support aclint
This RISC-V ACLINT specification [1] defines a set of memory mapped devices which provide inter-processor interrupts (IPI) and timer functionalities for each HART on a multi-HART RISC-V platform.
The RISC-V ACLINT specification is defined to be backward compatible with the SiFive CLINT specification, however the device tree binding is a new one. This change updates the sifive clint ipi driver to support ACLINT mswi device, by checking the per-driver data field of the ACLINT mtimer driver to determine whether a syscon based approach needs to be taken to get the base address of the ACLINT mswi device.
[1] https://github.com/riscv/riscv-aclint/blob/main/riscv-aclint.adoc
Signed-off-by: Bin Meng bmeng@tinylab.org
LGTM.
Thanks, Rick
From: Bin Meng bmeng@tinylab.org Sent: Monday, June 12, 2023 3:36 PM To: u-boot@lists.denx.de Cc: Leo Yu-Chi Liang(梁育齊) ycliang@andestech.com; Rick Jian-Zhi Chen(陳建志) rick@andestech.com Subject: [PATCH 2/3] riscv: clint: Update the sifive clint ipi driver to support aclint
This RISC-V ACLINT specification [1] defines a set of memory mapped devices which provide inter-processor interrupts (IPI) and timer functionalities for each HART on a multi-HART RISC-V platform.
The RISC-V ACLINT specification is defined to be backward compatible with the SiFive CLINT specification, however the device tree binding is a new one. This change updates the sifive clint ipi driver to support ACLINT mswi device, by checking the per-driver data field of the ACLINT mtimer driver to determine whether a syscon based approach needs to be taken to get the base address of the ACLINT mswi device.
[1] https://github.com/riscv/riscv-aclint/blob/main/riscv-aclint.adoc
Signed-off-by: Bin Meng bmeng@tinylab.org
LGTM.
Sorry, forgot the signed up.
Reviewed-by: Rick Chen rick@andestech.com
Thanks, Rick
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Rick Chen