Starting with v5.15-rc1, I'm now seeing am335x beaglebone black produce the following error on pruss probe: Unhandled fault: external abort on non-linefetch (0x1008) at 0xe0326000 This seems to have started with the enabling of pruss for am335x in the dts files. Adding a read-back after write to the sysconfig register fixes the issue for me. Cc: Suman Anna <s-anna@xxxxxx> Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx> --- drivers/bus/ti-sysc.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/bus/ti-sysc.c b/drivers/bus/ti-sysc.c --- a/drivers/bus/ti-sysc.c +++ b/drivers/bus/ti-sysc.c @@ -2037,6 +2037,9 @@ static int sysc_reset(struct sysc *ddata) sysc_val = sysc_read_sysconfig(ddata); sysc_val |= sysc_mask; sysc_write(ddata, sysc_offset, sysc_val); + + /* Flush posted write */ + sysc_read_sysconfig(ddata); } if (ddata->cfg.srst_udelay) -- 2.33.0
