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I'm basically looking for >>>>>> help to do the equivalent of >>>>>> >>>>>>     88775338cd58 - arm64: dts: imx8mm: Add MIPI DSI pipeline >>>>>>     f964f67dd6ee - arm64: dts: imx8mm: Add eLCDIF node support >>>>>> >>>>>> for imx8mp in order to test those patches on our boards (we have two >>>>>> variants). >>>>> >>>>> Marek, any help here, thanks. >>>> >>>> Try attached patch. >>> >>> Thanks. I removed the lcdif2 and ldb nodes I had added from Alexander's >>> patch (94e6197dadc9 in linux-next) in order to apply it. I get a couple >>> of errors during boot: >>> >>>    clk: /soc@0/bus@32c00000/mipi_dsi@32e60000: failed to reparent >>> media_apb to sys_pll1_266m: -22 >>> >>> and enabling a pr_debug in clk_core_set_parent_nolock() shows that this >>> is because >>> >>>    clk_core_set_parent_nolock: clk sys_pll1_266m can not be parent of clk >>> media_apb >>> >>> Further, the mipi_dsi fails to probe due to >>> >>>    /soc@0/bus@32c00000/mipi_dsi@32e60000: failed to get >>> 'samsung,burst-clock-frequency' property >>> >>> All other .dtsi files seem to have those samsung,burst-clock-frequency >>> and samsung,esc-clock-frequency properties, so I suppose those should >>> also go into the imx8mp.dtsi and are not something that the board .dts >>> file should supply(?). >> >> No, that samsung,esc-clock-frequency (should be some 10-20 MHz, based on >> your panel/bridge) and samsung,burst-clock-frequency (that's the HS >> clock) should go into board DT, as those are property of the attached >> panel/bridge. > > OK. > > But I simply can't make that match what I see in that branch. For > example, there's imx8mm-icore-mx8mm-ctouch2-of10.dts and > imx8mm-icore-mx8mm-edimm2.2.dts which both seem to have a ti,sn65dsi84 > bridge, neither override the values defined in imx8mm.dtsi, which are > > samsung,burst-clock-frequency = <891000000>; > samsung,esc-clock-frequency = <54000000>; > > and that 891MHz value seems to be out of range for the dsi84 bridge - > under Recommended Operating Conditions, the data sheet says "DSI HS > clock input frequency", min 40, max 500 MHz. Please note that the value in samsung,burst-clock-frequency is double the clock rate of the effective DSI HS clock. I can confirm that a SN65DSI84 is able to work with the default settings in general. Still the LVDS clock is derived from the DSI clock and the sn65dsi83 driver calculates its PLL values expecting a DSI input clock matching the panel mode. So you might have to tune this value. > > There's also the "clk sys_pll1_266m can not be parent of clk media_apb". > Are you sure about those assigned-clocks and assigned-clock-parents > settings? > > Rasmus > From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 6360FC61DA4 for ; Mon, 6 Feb 2023 08:12:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:In-Reply-To:From: References:Cc:To:Subject:Date:Message-ID:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; 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charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org T24gMDMuMDIuMjMgMTM6MjksIFJhc211cyBWaWxsZW1vZXMgd3JvdGU6Cj4gT24gMDEvMDIvMjAy MyAyMy4wMCwgTWFyZWsgVmFzdXQgd3JvdGU6Cj4+IE9uIDEvMzAvMjMgMTM6NDUsIFJhc211cyBW aWxsZW1vZXMgd3JvdGU6Cj4+PiBPbiAyNy8wMS8yMDIzIDEyLjMwLCBNYXJlayBWYXN1dCB3cm90 ZToKPj4+PiBPbiAxLzI3LzIzIDEyOjA0LCBKYWdhbiBUZWtpIHdyb3RlOgo+Pj4KPj4+Pj4+IFRo YW5rcywgYnV0IHRoYXQncyBleGFjdGx5IHdoYXQgSSdtIGRvaW5nLCBhbmQgSSBkb24ndCBzZWUg YW55Cj4+Pj4+PiBtb2RpZmljYXRpb24gb2YgaW14OG1wLmR0c2kgaW4gdGhhdCBicmFuY2guIEkn bSBiYXNpY2FsbHkgbG9va2luZyBmb3IKPj4+Pj4+IGhlbHAgdG8gZG8gdGhlIGVxdWl2YWxlbnQg b2YKPj4+Pj4+Cj4+Pj4+PiDCoMKgwqAgODg3NzUzMzhjZDU4IC0gYXJtNjQ6IGR0czogaW14OG1t OiBBZGQgTUlQSSBEU0kgcGlwZWxpbmUKPj4+Pj4+IMKgwqDCoCBmOTY0ZjY3ZGQ2ZWUgLSBhcm02 NDogZHRzOiBpbXg4bW06IEFkZCBlTENESUYgbm9kZSBzdXBwb3J0Cj4+Pj4+Pgo+Pj4+Pj4gZm9y IGlteDhtcCBpbiBvcmRlciB0byB0ZXN0IHRob3NlIHBhdGNoZXMgb24gb3VyIGJvYXJkcyAod2Ug aGF2ZSB0d28KPj4+Pj4+IHZhcmlhbnRzKS4KPj4+Pj4KPj4+Pj4gTWFyZWssIGFueSBoZWxwIGhl cmUsIHRoYW5rcy4KPj4+Pgo+Pj4+IFRyeSBhdHRhY2hlZCBwYXRjaC4KPj4+Cj4+PiBUaGFua3Mu IEkgcmVtb3ZlZCB0aGUgbGNkaWYyIGFuZCBsZGIgbm9kZXMgSSBoYWQgYWRkZWQgZnJvbSBBbGV4 YW5kZXIncwo+Pj4gcGF0Y2ggKDk0ZTYxOTdkYWRjOSBpbiBsaW51eC1uZXh0KSBpbiBvcmRlciB0 byBhcHBseSBpdC4gSSBnZXQgYSBjb3VwbGUKPj4+IG9mIGVycm9ycyBkdXJpbmcgYm9vdDoKPj4+ Cj4+PiDCoMKgIGNsazogL3NvY0AwL2J1c0AzMmMwMDAwMC9taXBpX2RzaUAzMmU2MDAwMDogZmFp bGVkIHRvIHJlcGFyZW50Cj4+PiBtZWRpYV9hcGIgdG8gc3lzX3BsbDFfMjY2bTogLTIyCj4+Pgo+ Pj4gYW5kIGVuYWJsaW5nIGEgcHJfZGVidWcgaW4gY2xrX2NvcmVfc2V0X3BhcmVudF9ub2xvY2so KSBzaG93cyB0aGF0IHRoaXMKPj4+IGlzIGJlY2F1c2UKPj4+Cj4+PiDCoMKgIGNsa19jb3JlX3Nl dF9wYXJlbnRfbm9sb2NrOiBjbGsgc3lzX3BsbDFfMjY2bSBjYW4gbm90IGJlIHBhcmVudCBvZiBj bGsKPj4+IG1lZGlhX2FwYgo+Pj4KPj4+IEZ1cnRoZXIsIHRoZSBtaXBpX2RzaSBmYWlscyB0byBw cm9iZSBkdWUgdG8KPj4+Cj4+PiDCoMKgIC9zb2NAMC9idXNAMzJjMDAwMDAvbWlwaV9kc2lAMzJl NjAwMDA6IGZhaWxlZCB0byBnZXQKPj4+ICdzYW1zdW5nLGJ1cnN0LWNsb2NrLWZyZXF1ZW5jeScg cHJvcGVydHkKPj4+Cj4+PiBBbGwgb3RoZXIgLmR0c2kgZmlsZXMgc2VlbSB0byBoYXZlIHRob3Nl IHNhbXN1bmcsYnVyc3QtY2xvY2stZnJlcXVlbmN5Cj4+PiBhbmQgc2Ftc3VuZyxlc2MtY2xvY2st ZnJlcXVlbmN5IHByb3BlcnRpZXMsIHNvIEkgc3VwcG9zZSB0aG9zZSBzaG91bGQKPj4+IGFsc28g Z28gaW50byB0aGUgaW14OG1wLmR0c2kgYW5kIGFyZSBub3Qgc29tZXRoaW5nIHRoYXQgdGhlIGJv YXJkIC5kdHMKPj4+IGZpbGUgc2hvdWxkIHN1cHBseSg/KS4KPj4KPj4gTm8sIHRoYXQgc2Ftc3Vu Zyxlc2MtY2xvY2stZnJlcXVlbmN5IChzaG91bGQgYmUgc29tZSAxMC0yMCBNSHosIGJhc2VkIG9u Cj4+IHlvdXIgcGFuZWwvYnJpZGdlKSBhbmQgc2Ftc3VuZyxidXJzdC1jbG9jay1mcmVxdWVuY3kg KHRoYXQncyB0aGUgSFMKPj4gY2xvY2spIHNob3VsZCBnbyBpbnRvIGJvYXJkIERULCBhcyB0aG9z ZSBhcmUgcHJvcGVydHkgb2YgdGhlIGF0dGFjaGVkCj4+IHBhbmVsL2JyaWRnZS4KPiAKPiBPSy4K PiAKPiBCdXQgSSBzaW1wbHkgY2FuJ3QgbWFrZSB0aGF0IG1hdGNoIHdoYXQgSSBzZWUgaW4gdGhh dCBicmFuY2guIEZvcgo+IGV4YW1wbGUsIHRoZXJlJ3MgaW14OG1tLWljb3JlLW14OG1tLWN0b3Vj aDItb2YxMC5kdHMgYW5kCj4gaW14OG1tLWljb3JlLW14OG1tLWVkaW1tMi4yLmR0cyB3aGljaCBi b3RoIHNlZW0gdG8gaGF2ZSBhIHRpLHNuNjVkc2k4NAo+IGJyaWRnZSwgbmVpdGhlciBvdmVycmlk ZSB0aGUgdmFsdWVzIGRlZmluZWQgaW4gaW14OG1tLmR0c2ksIHdoaWNoIGFyZQo+IAo+ICAgICAg ICAgc2Ftc3VuZyxidXJzdC1jbG9jay1mcmVxdWVuY3kgPSA8ODkxMDAwMDAwPjsKPiAgICAgICAg IHNhbXN1bmcsZXNjLWNsb2NrLWZyZXF1ZW5jeSA9IDw1NDAwMDAwMD47Cj4gCj4gYW5kIHRoYXQg ODkxTUh6IHZhbHVlIHNlZW1zIHRvIGJlIG91dCBvZiByYW5nZSBmb3IgdGhlIGRzaTg0IGJyaWRn ZSAtCj4gdW5kZXIgUmVjb21tZW5kZWQgT3BlcmF0aW5nIENvbmRpdGlvbnMsIHRoZSBkYXRhIHNo ZWV0IHNheXMgIkRTSSBIUwo+IGNsb2NrIGlucHV0IGZyZXF1ZW5jeSIsIG1pbiA0MCwgbWF4IDUw MCBNSHouCgpQbGVhc2Ugbm90ZSB0aGF0IHRoZSB2YWx1ZSBpbiBzYW1zdW5nLGJ1cnN0LWNsb2Nr LWZyZXF1ZW5jeSBpcyBkb3VibGUKdGhlIGNsb2NrIHJhdGUgb2YgdGhlIGVmZmVjdGl2ZSBEU0kg SFMgY2xvY2suIEkgY2FuIGNvbmZpcm0gdGhhdCBhClNONjVEU0k4NCBpcyBhYmxlIHRvIHdvcmsg d2l0aCB0aGUgZGVmYXVsdCBzZXR0aW5ncyBpbiBnZW5lcmFsLiBTdGlsbAp0aGUgTFZEUyBjbG9j ayBpcyBkZXJpdmVkIGZyb20gdGhlIERTSSBjbG9jayBhbmQgdGhlIHNuNjVkc2k4MyBkcml2ZXIK Y2FsY3VsYXRlcyBpdHMgUExMIHZhbHVlcyBleHBlY3RpbmcgYSBEU0kgaW5wdXQgY2xvY2sgbWF0 Y2hpbmcgdGhlIHBhbmVsCm1vZGUuIFNvIHlvdSBtaWdodCBoYXZlIHRvIHR1bmUgdGhpcyB2YWx1 ZS4KCj4gCj4gVGhlcmUncyBhbHNvIHRoZSAiY2xrIHN5c19wbGwxXzI2Nm0gY2FuIG5vdCBiZSBw YXJlbnQgb2YgY2xrIG1lZGlhX2FwYiIuCj4gQXJlIHlvdSBzdXJlIGFib3V0IHRob3NlIGFzc2ln bmVkLWNsb2NrcyBhbmQgYXNzaWduZWQtY2xvY2stcGFyZW50cwo+IHNldHRpbmdzPwo+IAo+IFJh c211cwo+IAoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18K bGludXgtYXJtLWtlcm5lbCBtYWlsaW5nIGxpc3QKbGludXgtYXJtLWtlcm5lbEBsaXN0cy5pbmZy YWRlYWQub3JnCmh0dHA6Ly9saXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlzdGluZm8vbGlu dXgtYXJtLWtlcm5lbAo= From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id AD535C61DA4 for ; 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I'm basically looking for >>>>>> help to do the equivalent of >>>>>> >>>>>>     88775338cd58 - arm64: dts: imx8mm: Add MIPI DSI pipeline >>>>>>     f964f67dd6ee - arm64: dts: imx8mm: Add eLCDIF node support >>>>>> >>>>>> for imx8mp in order to test those patches on our boards (we have two >>>>>> variants). >>>>> >>>>> Marek, any help here, thanks. >>>> >>>> Try attached patch. >>> >>> Thanks. I removed the lcdif2 and ldb nodes I had added from Alexander's >>> patch (94e6197dadc9 in linux-next) in order to apply it. I get a couple >>> of errors during boot: >>> >>>    clk: /soc@0/bus@32c00000/mipi_dsi@32e60000: failed to reparent >>> media_apb to sys_pll1_266m: -22 >>> >>> and enabling a pr_debug in clk_core_set_parent_nolock() shows that this >>> is because >>> >>>    clk_core_set_parent_nolock: clk sys_pll1_266m can not be parent of clk >>> media_apb >>> >>> Further, the mipi_dsi fails to probe due to >>> >>>    /soc@0/bus@32c00000/mipi_dsi@32e60000: failed to get >>> 'samsung,burst-clock-frequency' property >>> >>> All other .dtsi files seem to have those samsung,burst-clock-frequency >>> and samsung,esc-clock-frequency properties, so I suppose those should >>> also go into the imx8mp.dtsi and are not something that the board .dts >>> file should supply(?). >> >> No, that samsung,esc-clock-frequency (should be some 10-20 MHz, based on >> your panel/bridge) and samsung,burst-clock-frequency (that's the HS >> clock) should go into board DT, as those are property of the attached >> panel/bridge. > > OK. > > But I simply can't make that match what I see in that branch. For > example, there's imx8mm-icore-mx8mm-ctouch2-of10.dts and > imx8mm-icore-mx8mm-edimm2.2.dts which both seem to have a ti,sn65dsi84 > bridge, neither override the values defined in imx8mm.dtsi, which are > > samsung,burst-clock-frequency = <891000000>; > samsung,esc-clock-frequency = <54000000>; > > and that 891MHz value seems to be out of range for the dsi84 bridge - > under Recommended Operating Conditions, the data sheet says "DSI HS > clock input frequency", min 40, max 500 MHz. Please note that the value in samsung,burst-clock-frequency is double the clock rate of the effective DSI HS clock. I can confirm that a SN65DSI84 is able to work with the default settings in general. Still the LVDS clock is derived from the DSI clock and the sn65dsi83 driver calculates its PLL values expecting a DSI input clock matching the panel mode. So you might have to tune this value. > > There's also the "clk sys_pll1_266m can not be parent of clk media_apb". > Are you sure about those assigned-clocks and assigned-clock-parents > settings? > > Rasmus >