Message ID | 20230724084554.1924378-5-sai.krishna.potthuri@amd.com |
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State | New |
Headers | show
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Mon, 24 Jul 2023 03:46:59 -0500 Received: from SATLEXMB04.amd.com (10.181.40.145) by SATLEXMB08.amd.com (10.181.40.132) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.27; Mon, 24 Jul 2023 01:46:58 -0700 Received: from xhdlakshmis40.xilinx.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server id 15.1.2507.27 via Frontend Transport; Mon, 24 Jul 2023 03:46:54 -0500 From: Sai Krishna Potthuri <sai.krishna.potthuri@amd.com> To: Linus Walleij <linus.walleij@linaro.org>, Michal Simek <michal.simek@amd.com>, Rob Herring <robh+dt@kernel.org>, Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>, Conor Dooley <conor+dt@kernel.org>, Mathieu Poirier <mathieu.poirier@linaro.org>, Tanmay Shah <tanmay.shah@amd.com>, Ben Levinsky <ben.levinsky@amd.com>, Marek Vasut <marex@denx.de>, Roman Gushchin <roman.gushchin@linux.dev>, Arnd Bergmann <arnd@arndb.de> CC: <linux-arm-kernel@lists.infradead.org>, <linux-kernel@vger.kernel.org>, <linux-gpio@vger.kernel.org>, <devicetree@vger.kernel.org>, <saikrishna12468@gmail.com>, <git@amd.com>, Sai Krishna Potthuri <sai.krishna.potthuri@amd.com> Subject: [PATCH v2 4/4] pinctrl: pinctrl-zynqmp: Add support for output-enable and bias-high impedance Date: Mon, 24 Jul 2023 14:15:54 +0530 Message-ID: <20230724084554.1924378-5-sai.krishna.potthuri@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230724084554.1924378-1-sai.krishna.potthuri@amd.com> References: <20230724084554.1924378-1-sai.krishna.potthuri@amd.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DM6NAM11FT068:EE_|IA0PR12MB7602:EE_ X-MS-Office365-Filtering-Correlation-Id: e5692687-196f-4ab0-36b8-08db8c22971f X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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Series |
pinctrl: pinctrl-zynqmp: Add tri-state configuration support
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expand
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diff --git a/drivers/pinctrl/pinctrl-zynqmp.c b/drivers/pinctrl/pinctrl-zynqmp.c index 8d2cb0999f2f..f2be341f73e1 100644 --- a/drivers/pinctrl/pinctrl-zynqmp.c +++ b/drivers/pinctrl/pinctrl-zynqmp.c @@ -415,6 +415,10 @@ static int zynqmp_pinconf_cfg_set(struct pinctrl_dev *pctldev, break; case PIN_CONFIG_BIAS_HIGH_IMPEDANCE: + param = PM_PINCTRL_CONFIG_TRI_STATE; + arg = PM_PINCTRL_TRI_STATE_ENABLE; + ret = zynqmp_pm_pinctrl_set_config(pin, param, arg); + break; case PIN_CONFIG_MODE_LOW_POWER: /* * These cases are mentioned in dts but configurable @@ -423,6 +427,11 @@ static int zynqmp_pinconf_cfg_set(struct pinctrl_dev *pctldev, */ ret = 0; break; + case PIN_CONFIG_OUTPUT_ENABLE: + param = PM_PINCTRL_CONFIG_TRI_STATE; + arg = PM_PINCTRL_TRI_STATE_DISABLE; + ret = zynqmp_pm_pinctrl_set_config(pin, param, arg); + break; default: dev_warn(pctldev->dev, "unsupported configuration parameter '%u'\n",
Add support to handle 'output-enable' and 'bias-high-impedance' configurations. Using these pinctrl properties observed hang issues with older PMUFW(Xilinx ZynqMP Platform Management Firmware), hence reverted the patch. Commit 9989bc33c4894e075167 ("Revert "pinctrl: pinctrl-zynqmp: Add support for output-enable and bias-high-impedance""). Support for configuring these properties added in PMUFW Configuration Set version 2.0. When there is a request for these configurations from pinctrl driver for ZynqMP platform, xilinx firmware driver checks for this version before configuring these properties to avoid the hang issue and proceeds further only when firmware version is >=2 otherwise it returns error. Signed-off-by: Sai Krishna Potthuri <sai.krishna.potthuri@amd.com> --- drivers/pinctrl/pinctrl-zynqmp.c | 9 +++++++++ 1 file changed, 9 insertions(+)