<html><body><p> <pre> On Wed, 2024-04-03 at 16:56 +0200, Krzysztof Kozlowski wrote: > > External email : Please do not click links or open attachments until > you have verified the sender or the content. > On 03/04/2024 08:41, Krzysztof Kozlowski wrote: > > On 03/04/2024 06:05, Liankun Yang wrote: > >> [Description] > >> Severe screen flickering has been observed on the external display > >> when the DP projection function is used with the market expansion > dock. > >> > > > >> +if (!strcmp(mode_name, RG_XTP_GLB_TXPLL_SSC_DELTA_RBR)) { > >> +regmap_update_bits(dp_phy->regs, ssc_reg_offset, > >> + XTP_GLB_TXPLL_SSC_DELTA_RBR_DEFAULT, read_value); > >> +} else if (!strcmp(mode_name, RG_XTP_GLB_TXPLL_SSC_DELTA_HBR)) { > >> +read_value = read_value << 16 | 0x0000; > >> +regmap_update_bits(dp_phy->regs, ssc_reg_offset, > >> + XTP_GLB_TXPLL_SSC_DELTA_HBR_DEFAULT, read_value); > >> +} > >> + > >> +return 0; > >> +} > >> + > >> +static struct device_node *mtk_dp_get_ssc_node(struct phy *phy, > struct mtk_dp_phy *dp_phy) > >> +{ > >> +struct device_node *mode_node = NULL; > >> + > >> +mode_node = of_find_node_by_name(dp_phy->dev->of_node, > SSC_SETTING); > > > > ?!?! > > You have the node, why do you try to find it? > > > > Wait, that was brainfuck from my side or -ENOCOFFEE. Ignore. > > I still have a question though, where did you document new ABI: > dependency on the node name here? > > Also, why you are not going through direct children - > of_get_child_by_name()? > > Best regards, > Krzysztof > > Sorry, there is formatting issue in the previous email. The dp_phy device has already been registered through the mtk_dp_register_phy function in the mtk_dp.c file, so it cannot be redefined in the dts. Avoid using of_get_child_by_name for this purpose. To find the node name, utilize of_find_node_by_name since it has already been registered. Best regards, Liankun Yang > </pre> </p></body></html><pre>************* MEDIATEK Confidentiality Notice ******************** The information contained in this e-mail message (including any attachments) may be confidential, proprietary, privileged, or otherwise exempt from disclosure under applicable laws. It is intended to be conveyed only to the designated recipient(s). Any use, dissemination, distribution, printing, retaining or copying of this e-mail (including its attachments) by unintended recipient(s) is strictly prohibited and may be unlawful. If you are not an intended recipient of this e-mail, or believe that you have received this e-mail in error, please notify the sender immediately (by replying to this e-mail), delete any and all copies of this e-mail (including any attachments) from your system, and do not disclose the content of this e-mail to any other person. Thank you! </pre>