On Thu, Mar 06, 2025 at 03:54:26PM +0800, Stanley Chu wrote: > From: Stanley Chu <yschu@xxxxxxxxxxx> > > Nuvoton npcm845 SoC uses an older IP version, which has specific > hardware issues that need to be addressed with a different compatible > string. > > Add driver data for different compatible strings to define platform > specific quirks. > Add compatible string for npcm845 to define its own driver data. > > Reported-by: kernel test robot <lkp@xxxxxxxxx> > Closes: https://lore.kernel.org/oe-kbuild-all/202503061400.GGr64rkR-lkp@xxxxxxxxx/ Needn't these for new version. Need such tags only when seperated patch that fix this issue. I think alex can drop these when apply. If need respin patches, remove it. Reviewed-by: Frank Li <Frank.Li@xxxxxxx> > Signed-off-by: Stanley Chu <yschu@xxxxxxxxxxx> > --- > drivers/i3c/master/svc-i3c-master.c | 17 ++++++++++++++++- > 1 file changed, 16 insertions(+), 1 deletion(-) > > diff --git a/drivers/i3c/master/svc-i3c-master.c b/drivers/i3c/master/svc-i3c-master.c > index d6057d8c7dec..40269b692aa8 100644 > --- a/drivers/i3c/master/svc-i3c-master.c > +++ b/drivers/i3c/master/svc-i3c-master.c > @@ -158,6 +158,10 @@ struct svc_i3c_regs_save { > u32 mdynaddr; > }; > > +struct svc_i3c_drvdata { > + u32 quirks; > +}; > + > /** > * struct svc_i3c_master - Silvaco I3C Master structure > * @base: I3C master controller > @@ -183,6 +187,7 @@ struct svc_i3c_regs_save { > * @ibi.tbq_slot: To be queued IBI slot > * @ibi.lock: IBI lock > * @lock: Transfer lock, protect between IBI work thread and callbacks from master > + * @drvdata: Driver data > * @enabled_events: Bit masks for enable events (IBI, HotJoin). > * @mctrl_config: Configuration value in SVC_I3C_MCTRL for setting speed back. > */ > @@ -214,6 +219,7 @@ struct svc_i3c_master { > spinlock_t lock; > } ibi; > struct mutex lock; > + const struct svc_i3c_drvdata *drvdata; > u32 enabled_events; > u32 mctrl_config; > }; > @@ -1817,6 +1823,10 @@ static int svc_i3c_master_probe(struct platform_device *pdev) > if (!master) > return -ENOMEM; > > + master->drvdata = of_device_get_match_data(dev); > + if (!master->drvdata) > + return -EINVAL; > + > master->regs = devm_platform_ioremap_resource(pdev, 0); > if (IS_ERR(master->regs)) > return PTR_ERR(master->regs); > @@ -1958,8 +1968,13 @@ static const struct dev_pm_ops svc_i3c_pm_ops = { > svc_i3c_runtime_resume, NULL) > }; > > +static const struct svc_i3c_drvdata npcm845_drvdata = {}; > + > +static const struct svc_i3c_drvdata svc_default_drvdata = {}; > + > static const struct of_device_id svc_i3c_master_of_match_tbl[] = { > - { .compatible = "silvaco,i3c-master-v1"}, > + { .compatible = "nuvoton,npcm845-i3c", .data = &npcm845_drvdata }, > + { .compatible = "silvaco,i3c-master-v1", .data = &svc_default_drvdata }, > { /* sentinel */ }, > }; > MODULE_DEVICE_TABLE(of, svc_i3c_master_of_match_tbl); > -- > 2.34.1 > > > -- > linux-i3c mailing list > linux-i3c@xxxxxxxxxxxxxxxxxxx > http://lists.infradead.org/mailman/listinfo/linux-i3c
