opensbi.git/lib/utils/ipi/fdt_ipi_mswi.c, branch v1.2

lib: utils/ipi: mswi: add T-Head C9xx CLINT compatible

2022-12-17T05:31:00Z

Althoug the MTIMER part of a C9xx CLINT differs from a SiFive one, the MSWI part is compliant. Add T-Head C9xx CLINT compatible string to fdt_ipi_mswi code, sharing the same codepath with SiFive CLINT. Signed-off-by: Icenowy Zheng Reviewed-by: Anup Patel

lib: utils/timer: Remove Allwinner D1 CLINT compatibles

2022-06-22T05:25:37Z

The allwinner,sun20i-d1-clint compatible string is not documented in any official binding, so it should not be used by drivers. The MSWI in the D1 CLINT is compatible with the ACLINT specification, so it can take advantage of generic driver support. However, that is only possible if the MSWI and MTIMER are split into separate DT nodes. This means the final binding for this device is likely to be incompatible with what is implemented here. Remove this compatible string from the driver to prevent it from appearing in a stable version and causing future issues. Signed-off-by: Samuel Holland Reviewed-by: Anup Patel

lib: utils/timer: Add a separate compatible for the D1 CLINT

2022-06-21T03:50:59Z

The CLINT in the Allwinner D1 SoC apparently does not support 64-bit MMIO access. A property was added to support this quirk (and that property was copied to the ACLINT MTIMER code). However, since this difference in behavior makes the D1 CLINT incompatible with the SiFive CLINT's programming interface, a better solution is to use a separate compatible string. Signed-off-by: Samuel Holland Reviewed-by: Anup Patel

lib: utils/fdt: Require match data to be const

2022-05-30T05:02:35Z

Match data stores hardware attributes which do not change at runtime, so it does not need to be mutable. Make it const. Reviewed-by: Guo Ren Reviewed-by: Xiang W Reviewed-by: Anup Patel Signed-off-by: Samuel Holland

lib: utils/fdt: Extend fdt_parse_aclint_node() function

2021-08-14T03:32:39Z

The fdt_parse_aclint_node() is used to parse DT node for SiFive CLINT, ACLINT MTIMER, and ACLINT MSWI devices. The ACLINT MTIMER has undergone following changes: 1) MTIMER DT node now requires separate addresses in for MTIME register and MTIMECMPx registers in the reg DT property. 2) MTIMER DT node might have no interrupts-extended DT property when the MTIMER device has no associated HARTs (i.e. the MTIMER device has no MTIMECMPx registers) This patch extends fdt_parse_aclint_node() to handle above mentioned changes in ACLINT MTIMER DT bindings. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: utils/ipi: Add FDT based ACLINT MSWI IPI driver

2021-06-24T04:09:51Z

We add a new FDT based ACLINT MSWI IPI driver which works for both CLINT device and standalone ACLINT MSWI device. Signed-off-by: Anup Patel Reviewed-by: Bin Meng Reviewed-by: Xiang W