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Tue, 18 Jun 2024 11:25:16 +0000 (UTC) Message-ID: Date: Tue, 18 Jun 2024 14:25:16 +0300 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 4/4] phy: phy-rockchip-samsung-hdptx: Add clock provider support To: =?UTF-8?Q?Heiko_St=C3=BCbner?= , Vinod Koul , Kishon Vijay Abraham I , Algea Cao , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: kernel@collabora.com, linux-phy@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org References: <20240618-rk3588-hdmiphy-clkprov-v1-0-80e4aa12177e@collabora.com> <20240618-rk3588-hdmiphy-clkprov-v1-4-80e4aa12177e@collabora.com> <2910644.FA0FI3ke8A@diego> Content-Language: en-US From: Cristian Ciocaltea In-Reply-To: <2910644.FA0FI3ke8A@diego> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240618_042520_135329_8C28B751 X-CRM114-Status: GOOD ( 12.86 ) X-BeenThere: linux-phy@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux Phy Mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org T24gNi8xOC8yNCAxMDo1NSBBTSwgSGVpa28gU3TDvGJuZXIgd3JvdGU6Cj4gQW0gTW9udGFnLCAx Ny4gSnVuaSAyMDI0LCAyMzo0ODoxMiBDRVNUIHNjaHJpZWIgQ3Jpc3RpYW4gQ2lvY2FsdGVhOgo+ PiBUaGUgSERNSSBQSFkgUExMIGNhbiBiZSB1c2VkIGFzIGFuIGFsdGVybmF0aXZlIGRjbGsgc291 cmNlIHRvIFJLMzU4OCBTb0MKPj4gQ1JVLiBJdCBwcm92aWRlcyBtb3JlIGFjY3VyYXRlIGNsb2Nr IHJhdGVzIHJlcXVpcmVkIGJ5IFZPUDIgdG8gaW1wcm92ZQo+PiBleGlzdGluZyBzdXBwb3J0IGZv ciBkaXNwbGF5IG1vZGVzIGhhbmRsaW5nLCB3aGljaCBpcyBrbm93biB0byBiZQo+PiBwcm9ibGVt YXRpYyB3aGVuIGRlYWxpbmcgd2l0aCBub24taW50ZWdlciByZWZyZXNoIHJhdGVzLCBhbW9uZyBv dGhlcnMuCj4+Cj4+IEl0IGlzIHdvcnRoIG5vdGluZyB0aGlzIG9ubHkgd29ya3MgZm9yIEhETUkg Mi4wIG9yIGJlbG93LCBlLmcuIGNhbm5vdCBiZQo+PiB1c2VkIHRvIHN1cHBvcnQgSERNSSAyLjEg NEtAMTIwSHogbW9kZS4KPj4KPj4gU2lnbmVkLW9mZi1ieTogQ3Jpc3RpYW4gQ2lvY2FsdGVhIDxj cmlzdGlhbi5jaW9jYWx0ZWFAY29sbGFib3JhLmNvbT4KPj4gLS0tCj4+ICBkcml2ZXJzL3BoeS9y b2NrY2hpcC9waHktcm9ja2NoaXAtc2Ftc3VuZy1oZHB0eC5jIHwgMTg5ICsrKysrKysrKysrKysr KysrKystLS0KPj4gIDEgZmlsZSBjaGFuZ2VkLCAxNjcgaW5zZXJ0aW9ucygrKSwgMjIgZGVsZXRp b25zKC0pCj4+Cj4+IGRpZmYgLS1naXQgYS9kcml2ZXJzL3BoeS9yb2NrY2hpcC9waHktcm9ja2No aXAtc2Ftc3VuZy1oZHB0eC5jIGIvZHJpdmVycy9waHkvcm9ja2NoaXAvcGh5LXJvY2tjaGlwLXNh bXN1bmctaGRwdHguYwo+PiBpbmRleCA3MmRlMjg3MjgyZWIuLmFkM2ZkNDA4NDM3NyAxMDA2NDQK Pj4gLS0tIGEvZHJpdmVycy9waHkvcm9ja2NoaXAvcGh5LXJvY2tjaGlwLXNhbXN1bmctaGRwdHgu Ywo+PiArKysgYi9kcml2ZXJzL3BoeS9yb2NrY2hpcC9waHktcm9ja2NoaXAtc2Ftc3VuZy1oZHB0 eC5jCj4gCj4+ICBzdGF0aWMgaW50IHJrX2hkcHR4X3BoeV9wb3dlcl9vbihzdHJ1Y3QgcGh5ICpw aHkpCj4+ICB7Cj4+ICAJc3RydWN0IHJrX2hkcHR4X3BoeSAqaGRwdHggPSBwaHlfZ2V0X2RydmRh dGEocGh5KTsKPj4gIAlpbnQgYnVzX3dpZHRoID0gcGh5X2dldF9idXNfd2lkdGgoaGRwdHgtPnBo eSk7Cj4+ICsJaW50IHJldDsKPj4gKwo+PiAgCS8qCj4+ICAJICogRklYTUU6IFRlbXBvcmFyeSB3 b3JrYXJvdW5kIHRvIHBhc3MgcGl4ZWxfY2xrX3JhdGUKPj4gIAkgKiBmcm9tIHRoZSBIRE1JIGJy aWRnZSBkcml2ZXIgdW50aWwgcGh5X2NvbmZpZ3VyZV9vcHRzX2hkbWkKPj4gQEAgLTg3MSwyMCAr OTI1LDE4IEBAIHN0YXRpYyBpbnQgcmtfaGRwdHhfcGh5X3Bvd2VyX29uKHN0cnVjdCBwaHkgKnBo eSkKPj4gIAlkZXZfZGJnKGhkcHR4LT5kZXYsICIlcyBidXNfd2lkdGg9JXggcmF0ZT0ldVxuIiwK Pj4gIAkJX19mdW5jX18sIGJ1c193aWR0aCwgcmF0ZSk7Cj4+ICAKPj4gLQlyZXR1cm4gcmtfaGRw dHhfcm9wbGxfdG1kc19tb2RlX2NvbmZpZyhoZHB0eCwgcmF0ZSk7Cj4+ICsJcmV0ID0gcmtfaGRw dHhfcGh5X2NvbnN1bWVyX2dldChoZHB0eCwgcmF0ZSk7Cj4+ICsJaWYgKCFyZXQpCj4+ICsJCXJl dCA9IHJrX2hkcHR4X3JvcGxsX3RtZHNfbW9kZV9jb25maWcoaGRwdHgsIHJhdGUpOwo+IAo+IEkg dGhpbmsgdGhpcyB3aWxsIG5lZWQgYSBwdXQgaWYgX21vZGVfY29uZmlnIGZhaWxzPwoKSW5kZWVk LCBhIGZvcmNlZCBwdXQgdmFyaWFudCB3b3VsZCBiZSByZXF1aXJlZCB0byBpZ25vcmUgYW55CnJl Z21hcF9yZWFkKCkgZXJyb3JzIGFuZCBrZWVwIHVzYWdlX2NvdW50IGRlY3JlbWVudGVkLiAgVGhp cyBzaG91bGQgYmUKYWxzbyB1c2VkIGluIHJrX2hkcHR4X3BoeV9jbGtfdW5wcmVwYXJlKCksIHNp bmNlIC0+dW5wcmVwYXJlKCkgY2FsbGJhY2sKY2Fubm90IGZhaWwuCgpXaWxsIGdldCB0aGlzIGZp eGVkIGluIHYyLgoKVGhhbmtzIGZvciByZXZpZXdpbmchCgpDcmlzdGlhbgoKLS0gCmxpbnV4LXBo eSBtYWlsaW5nIGxpc3QKbGludXgtcGh5QGxpc3RzLmluZnJhZGVhZC5vcmcKaHR0cHM6Ly9saXN0 cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlzdGluZm8vbGludXgtcGh5Cg== 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 D85C0C27C4F for ; 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Tue, 18 Jun 2024 11:25:16 +0000 (UTC) Message-ID: Date: Tue, 18 Jun 2024 14:25:16 +0300 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 4/4] phy: phy-rockchip-samsung-hdptx: Add clock provider support To: =?UTF-8?Q?Heiko_St=C3=BCbner?= , Vinod Koul , Kishon Vijay Abraham I , Algea Cao , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: kernel@collabora.com, linux-phy@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org References: <20240618-rk3588-hdmiphy-clkprov-v1-0-80e4aa12177e@collabora.com> <20240618-rk3588-hdmiphy-clkprov-v1-4-80e4aa12177e@collabora.com> <2910644.FA0FI3ke8A@diego> Content-Language: en-US From: Cristian Ciocaltea In-Reply-To: <2910644.FA0FI3ke8A@diego> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240618_042520_135329_8C28B751 X-CRM114-Status: GOOD ( 12.86 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org T24gNi8xOC8yNCAxMDo1NSBBTSwgSGVpa28gU3TDvGJuZXIgd3JvdGU6Cj4gQW0gTW9udGFnLCAx Ny4gSnVuaSAyMDI0LCAyMzo0ODoxMiBDRVNUIHNjaHJpZWIgQ3Jpc3RpYW4gQ2lvY2FsdGVhOgo+ PiBUaGUgSERNSSBQSFkgUExMIGNhbiBiZSB1c2VkIGFzIGFuIGFsdGVybmF0aXZlIGRjbGsgc291 cmNlIHRvIFJLMzU4OCBTb0MKPj4gQ1JVLiBJdCBwcm92aWRlcyBtb3JlIGFjY3VyYXRlIGNsb2Nr IHJhdGVzIHJlcXVpcmVkIGJ5IFZPUDIgdG8gaW1wcm92ZQo+PiBleGlzdGluZyBzdXBwb3J0IGZv ciBkaXNwbGF5IG1vZGVzIGhhbmRsaW5nLCB3aGljaCBpcyBrbm93biB0byBiZQo+PiBwcm9ibGVt YXRpYyB3aGVuIGRlYWxpbmcgd2l0aCBub24taW50ZWdlciByZWZyZXNoIHJhdGVzLCBhbW9uZyBv dGhlcnMuCj4+Cj4+IEl0IGlzIHdvcnRoIG5vdGluZyB0aGlzIG9ubHkgd29ya3MgZm9yIEhETUkg Mi4wIG9yIGJlbG93LCBlLmcuIGNhbm5vdCBiZQo+PiB1c2VkIHRvIHN1cHBvcnQgSERNSSAyLjEg NEtAMTIwSHogbW9kZS4KPj4KPj4gU2lnbmVkLW9mZi1ieTogQ3Jpc3RpYW4gQ2lvY2FsdGVhIDxj cmlzdGlhbi5jaW9jYWx0ZWFAY29sbGFib3JhLmNvbT4KPj4gLS0tCj4+ICBkcml2ZXJzL3BoeS9y b2NrY2hpcC9waHktcm9ja2NoaXAtc2Ftc3VuZy1oZHB0eC5jIHwgMTg5ICsrKysrKysrKysrKysr KysrKystLS0KPj4gIDEgZmlsZSBjaGFuZ2VkLCAxNjcgaW5zZXJ0aW9ucygrKSwgMjIgZGVsZXRp b25zKC0pCj4+Cj4+IGRpZmYgLS1naXQgYS9kcml2ZXJzL3BoeS9yb2NrY2hpcC9waHktcm9ja2No aXAtc2Ftc3VuZy1oZHB0eC5jIGIvZHJpdmVycy9waHkvcm9ja2NoaXAvcGh5LXJvY2tjaGlwLXNh bXN1bmctaGRwdHguYwo+PiBpbmRleCA3MmRlMjg3MjgyZWIuLmFkM2ZkNDA4NDM3NyAxMDA2NDQK Pj4gLS0tIGEvZHJpdmVycy9waHkvcm9ja2NoaXAvcGh5LXJvY2tjaGlwLXNhbXN1bmctaGRwdHgu Ywo+PiArKysgYi9kcml2ZXJzL3BoeS9yb2NrY2hpcC9waHktcm9ja2NoaXAtc2Ftc3VuZy1oZHB0 eC5jCj4gCj4+ICBzdGF0aWMgaW50IHJrX2hkcHR4X3BoeV9wb3dlcl9vbihzdHJ1Y3QgcGh5ICpw aHkpCj4+ICB7Cj4+ICAJc3RydWN0IHJrX2hkcHR4X3BoeSAqaGRwdHggPSBwaHlfZ2V0X2RydmRh dGEocGh5KTsKPj4gIAlpbnQgYnVzX3dpZHRoID0gcGh5X2dldF9idXNfd2lkdGgoaGRwdHgtPnBo eSk7Cj4+ICsJaW50IHJldDsKPj4gKwo+PiAgCS8qCj4+ICAJICogRklYTUU6IFRlbXBvcmFyeSB3 b3JrYXJvdW5kIHRvIHBhc3MgcGl4ZWxfY2xrX3JhdGUKPj4gIAkgKiBmcm9tIHRoZSBIRE1JIGJy aWRnZSBkcml2ZXIgdW50aWwgcGh5X2NvbmZpZ3VyZV9vcHRzX2hkbWkKPj4gQEAgLTg3MSwyMCAr OTI1LDE4IEBAIHN0YXRpYyBpbnQgcmtfaGRwdHhfcGh5X3Bvd2VyX29uKHN0cnVjdCBwaHkgKnBo eSkKPj4gIAlkZXZfZGJnKGhkcHR4LT5kZXYsICIlcyBidXNfd2lkdGg9JXggcmF0ZT0ldVxuIiwK Pj4gIAkJX19mdW5jX18sIGJ1c193aWR0aCwgcmF0ZSk7Cj4+ICAKPj4gLQlyZXR1cm4gcmtfaGRw dHhfcm9wbGxfdG1kc19tb2RlX2NvbmZpZyhoZHB0eCwgcmF0ZSk7Cj4+ICsJcmV0ID0gcmtfaGRw dHhfcGh5X2NvbnN1bWVyX2dldChoZHB0eCwgcmF0ZSk7Cj4+ICsJaWYgKCFyZXQpCj4+ICsJCXJl dCA9IHJrX2hkcHR4X3JvcGxsX3RtZHNfbW9kZV9jb25maWcoaGRwdHgsIHJhdGUpOwo+IAo+IEkg dGhpbmsgdGhpcyB3aWxsIG5lZWQgYSBwdXQgaWYgX21vZGVfY29uZmlnIGZhaWxzPwoKSW5kZWVk LCBhIGZvcmNlZCBwdXQgdmFyaWFudCB3b3VsZCBiZSByZXF1aXJlZCB0byBpZ25vcmUgYW55CnJl Z21hcF9yZWFkKCkgZXJyb3JzIGFuZCBrZWVwIHVzYWdlX2NvdW50IGRlY3JlbWVudGVkLiAgVGhp cyBzaG91bGQgYmUKYWxzbyB1c2VkIGluIHJrX2hkcHR4X3BoeV9jbGtfdW5wcmVwYXJlKCksIHNp bmNlIC0+dW5wcmVwYXJlKCkgY2FsbGJhY2sKY2Fubm90IGZhaWwuCgpXaWxsIGdldCB0aGlzIGZp eGVkIGluIHYyLgoKVGhhbmtzIGZvciByZXZpZXdpbmchCgpDcmlzdGlhbgoKX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KTGludXgtcm9ja2NoaXAgbWFpbGlu ZyBsaXN0CkxpbnV4LXJvY2tjaGlwQGxpc3RzLmluZnJhZGVhZC5vcmcKaHR0cDovL2xpc3RzLmlu ZnJhZGVhZC5vcmcvbWFpbG1hbi9saXN0aW5mby9saW51eC1yb2NrY2hpcAo= 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 C427BC2BA1A for ; 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Tue, 18 Jun 2024 11:25:16 +0000 (UTC) Message-ID: Date: Tue, 18 Jun 2024 14:25:16 +0300 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 4/4] phy: phy-rockchip-samsung-hdptx: Add clock provider support To: =?UTF-8?Q?Heiko_St=C3=BCbner?= , Vinod Koul , Kishon Vijay Abraham I , Algea Cao , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: kernel@collabora.com, linux-phy@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org References: <20240618-rk3588-hdmiphy-clkprov-v1-0-80e4aa12177e@collabora.com> <20240618-rk3588-hdmiphy-clkprov-v1-4-80e4aa12177e@collabora.com> <2910644.FA0FI3ke8A@diego> Content-Language: en-US From: Cristian Ciocaltea In-Reply-To: <2910644.FA0FI3ke8A@diego> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240618_042520_135329_8C28B751 X-CRM114-Status: GOOD ( 12.86 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 6/18/24 10:55 AM, Heiko Stübner wrote: > Am Montag, 17. Juni 2024, 23:48:12 CEST schrieb Cristian Ciocaltea: >> The HDMI PHY PLL can be used as an alternative dclk source to RK3588 SoC >> CRU. It provides more accurate clock rates required by VOP2 to improve >> existing support for display modes handling, which is known to be >> problematic when dealing with non-integer refresh rates, among others. >> >> It is worth noting this only works for HDMI 2.0 or below, e.g. cannot be >> used to support HDMI 2.1 4K@120Hz mode. >> >> Signed-off-by: Cristian Ciocaltea >> --- >> drivers/phy/rockchip/phy-rockchip-samsung-hdptx.c | 189 +++++++++++++++++++--- >> 1 file changed, 167 insertions(+), 22 deletions(-) >> >> diff --git a/drivers/phy/rockchip/phy-rockchip-samsung-hdptx.c b/drivers/phy/rockchip/phy-rockchip-samsung-hdptx.c >> index 72de287282eb..ad3fd4084377 100644 >> --- a/drivers/phy/rockchip/phy-rockchip-samsung-hdptx.c >> +++ b/drivers/phy/rockchip/phy-rockchip-samsung-hdptx.c > >> static int rk_hdptx_phy_power_on(struct phy *phy) >> { >> struct rk_hdptx_phy *hdptx = phy_get_drvdata(phy); >> int bus_width = phy_get_bus_width(hdptx->phy); >> + int ret; >> + >> /* >> * FIXME: Temporary workaround to pass pixel_clk_rate >> * from the HDMI bridge driver until phy_configure_opts_hdmi >> @@ -871,20 +925,18 @@ static int rk_hdptx_phy_power_on(struct phy *phy) >> dev_dbg(hdptx->dev, "%s bus_width=%x rate=%u\n", >> __func__, bus_width, rate); >> >> - return rk_hdptx_ropll_tmds_mode_config(hdptx, rate); >> + ret = rk_hdptx_phy_consumer_get(hdptx, rate); >> + if (!ret) >> + ret = rk_hdptx_ropll_tmds_mode_config(hdptx, rate); > > I think this will need a put if _mode_config fails? Indeed, a forced put variant would be required to ignore any regmap_read() errors and keep usage_count decremented. This should be also used in rk_hdptx_phy_clk_unprepare(), since ->unprepare() callback cannot fail. Will get this fixed in v2. Thanks for reviewing! Cristian