On 10/11/2020 11:21, Tony Lindgren wrote:
Bail out early from sysc_wait_softreset() just like we do in sysc_reset() if there's no sysstatus srst_shift to fix a bogus resetdone warning on enable as suggested by Grygorii Strashko <[email protected]>. We do not currently handle resets for modules that need writing to the sysstatus register. If we at some point add that, we also need to add SYSS_QUIRK_RESETDONE_INVERTED flag for cpsw as the sysstatus bit is low when reset is done as described in the am335x TRM "Table 14-202 SOFT_RESET Register Field Descriptions" Fixes: d46f9fbec719 ("bus: ti-sysc: Use optional clocks on for enable and wait for softreset bit") Suggested-by: Grygorii Strashko <[email protected]> Signed-off-by: Tony Lindgren <[email protected]> ---
Acked-by: Grygorii Strashko <[email protected]>
Changes since v1: - Drop quirk handling and use fix suggested by Grygorii --- 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 @@ -227,6 +227,9 @@ static int sysc_wait_softreset(struct sysc *ddata) u32 sysc_mask, syss_done, rstval; int syss_offset, error = 0;+ if (ddata->cap->regbits->srst_shift < 0)+ return 0; + syss_offset = ddata->offsets[SYSC_SYSSTATUS]; sysc_mask = BIT(ddata->cap->regbits->srst_shift);
-- Best regards, grygorii
