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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org On Fri, 2026-03-06 at 14:25 +0100, Nicolas Frattaroli wrote: > The MediaTek UFS driver contains support for an undocumented, > non-vendor-prefixed u32 property named "clk-scale-up-vcore-min". > > Since it is not part of any binding, and would not pass a bindings > review in its current form, remove it. > > To return this functionality, it needs to be resubmitted in a series > that also introduces it to the binding, and justifies what it is used > for. Compatibility with downstream device trees is not a valid > justification for its existence. > Is it possible to add the "clk-scale-up-vcore-min" to the DT binding firstly ? the reason is that MT8196 supports UFS4.0, and make the VCore at least 0.65V is the MUST condition that to run HS-G5 mode. > Reviewed-by: AngeloGioacchino Del Regno < > angelogioacchino.delregno@collabora.com> > Signed-off-by: Nicolas Frattaroli > --- > drivers/ufs/host/ufs-mediatek.c | 19 ------------------- > 1 file changed, 19 deletions(-) > > diff --git a/drivers/ufs/host/ufs-mediatek.c b/drivers/ufs/host/ufs- > mediatek.c > index ae6735683f76..1dfc299b93b5 100644 > --- a/drivers/ufs/host/ufs-mediatek.c > +++ b/drivers/ufs/host/ufs-mediatek.c > @@ -880,8 +880,6 @@ static void ufs_mtk_init_clocks(struct ufs_hba > *hba) > struct ufs_mtk_host *host = ufshcd_get_variant(hba); > struct list_head *head = &hba->clk_list_head; > struct ufs_clk_info *clki, *clki_tmp; > - struct device *dev = hba->dev; > - u32 volt; > > /* > * Find private clocks and store them in struct ufs_mtk_clk. > @@ -918,24 +916,7 @@ static void ufs_mtk_init_clocks(struct ufs_hba > *hba) > if (!ufs_mtk_is_clk_scale_ready(hba)) { > hba->caps &= ~UFSHCD_CAP_CLK_SCALING; > dev_info(hba->dev, "%s: Clock scaling unavailable", > __func__); > - return; > - } > - > - if (!host->reg_vcore) > - return; > - > - if (of_property_read_u32(dev->of_node, "clk-scale-up-vcore- > min", > - &volt)) { > - dev_info(dev, "failed to get clk-scale-up-vcore-min"); > - return; > } > - > - host->mclk.vcore_volt = volt; > - > - /* If default boot is max gear, request vcore */ > - if (volt && host->clk_scale_up) > - if (regulator_set_voltage(host->reg_vcore, volt, > INT_MAX)) > - dev_err(hba->dev, "Failed to set vcore to > %d\n", volt); > } > > static void ufs_mtk_setup_clk_gating(struct ufs_hba *hba) > -- linux-phy mailing list linux-phy@lists.infradead.org https://lists.infradead.org/mailman/listinfo/linux-phy