From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 290B7C142 for ; Mon, 4 Sep 2023 18:33:10 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A5ABAC433C9; Mon, 4 Sep 2023 18:33:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1693852390; bh=njMRSP2DPMuWqzfrKQAeFBdexW1xW3vTEfewTC9SQD0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=c4jS7OENQH5Mpc/8bjBxA5Wjm6QaraLWVF8et3O+evB9Ra2LaH72xNg+AbQIzghol oh0GRAd0YquEVctXbdkPlAJCUNDMNHuIDhJv/HdULg7XEORUgWZjDaQzQ1mlafbNY1 ws5aWzZf8XVbvHKMYGsrjK7GfFrV4CdRcUgc2Lk4= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Xu Yang , Peter Chen Subject: [PATCH 6.4 15/32] usb: chipidea: imx: improve logic if samsung,picophy-* parameter is 0 Date: Mon, 4 Sep 2023 19:30:13 +0100 Message-ID: <20230904182948.600314497@linuxfoundation.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20230904182947.899158313@linuxfoundation.org> References: <20230904182947.899158313@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Xu Yang commit 36668515d56bf73f06765c71e08c8f7465f1e5c4 upstream. In current driver, the value of tuning parameter will not take effect if samsung,picophy-* is assigned as 0. Because 0 is also a valid value acccording to the description of USB_PHY_CFG1 register, this will improve the logic to let it work. Fixes: 58a3cefb3840 ("usb: chipidea: imx: add two samsung picophy parameters tuning implementation") cc: Signed-off-by: Xu Yang Acked-by: Peter Chen Link: https://lore.kernel.org/r/20230627112126.1882666-1-xu.yang_2@nxp.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/chipidea/ci_hdrc_imx.c | 10 ++++++---- drivers/usb/chipidea/usbmisc_imx.c | 6 ++++-- 2 files changed, 10 insertions(+), 6 deletions(-) --- a/drivers/usb/chipidea/ci_hdrc_imx.c +++ b/drivers/usb/chipidea/ci_hdrc_imx.c @@ -175,10 +175,12 @@ static struct imx_usbmisc_data *usbmisc_ if (of_usb_get_phy_mode(np) == USBPHY_INTERFACE_MODE_ULPI) data->ulpi = 1; - of_property_read_u32(np, "samsung,picophy-pre-emp-curr-control", - &data->emp_curr_control); - of_property_read_u32(np, "samsung,picophy-dc-vol-level-adjust", - &data->dc_vol_level_adjust); + if (of_property_read_u32(np, "samsung,picophy-pre-emp-curr-control", + &data->emp_curr_control)) + data->emp_curr_control = -1; + if (of_property_read_u32(np, "samsung,picophy-dc-vol-level-adjust", + &data->dc_vol_level_adjust)) + data->dc_vol_level_adjust = -1; return data; } --- a/drivers/usb/chipidea/usbmisc_imx.c +++ b/drivers/usb/chipidea/usbmisc_imx.c @@ -660,13 +660,15 @@ static int usbmisc_imx7d_init(struct imx usbmisc->base + MX7D_USBNC_USB_CTRL2); /* PHY tuning for signal quality */ reg = readl(usbmisc->base + MX7D_USB_OTG_PHY_CFG1); - if (data->emp_curr_control && data->emp_curr_control <= + if (data->emp_curr_control >= 0 && + data->emp_curr_control <= (TXPREEMPAMPTUNE0_MASK >> TXPREEMPAMPTUNE0_BIT)) { reg &= ~TXPREEMPAMPTUNE0_MASK; reg |= (data->emp_curr_control << TXPREEMPAMPTUNE0_BIT); } - if (data->dc_vol_level_adjust && data->dc_vol_level_adjust <= + if (data->dc_vol_level_adjust >= 0 && + data->dc_vol_level_adjust <= (TXVREFTUNE0_MASK >> TXVREFTUNE0_BIT)) { reg &= ~TXVREFTUNE0_MASK; reg |= (data->dc_vol_level_adjust << TXVREFTUNE0_BIT);