linux-kernel - [PATCH v3 2/2] pinctrl: qcom: sc7280: Add clock optional check for ADSP bypass targets

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Date:   Fri, 10 Jun 2022 20:15:35 +0530
From:   Srinivasa Rao Mandadapu <quic_srivasam@...cinc.com>
To:     <agross@...nel.org>, <bjorn.andersson@...aro.org>,
        <lgirdwood@...il.com>, <broonie@...nel.org>, <robh+dt@...nel.org>,
        <quic_plai@...cinc.com>, <bgoswami@...cinc.com>, <perex@...ex.cz>,
        <tiwai@...e.com>, <srinivas.kandagatla@...aro.org>,
        <quic_rohkumar@...cinc.com>, <linux-arm-msm@...r.kernel.org>,
        <alsa-devel@...a-project.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <swboyd@...omium.org>,
        <judyhsiao@...omium.org>, Linus Walleij <linus.walleij@...aro.org>,
        <linux-gpio@...r.kernel.org>
CC:     Srinivasa Rao Mandadapu <quic_srivasam@...cinc.com>
Subject: [PATCH v3 2/2] pinctrl: qcom: sc7280: Add clock optional check for ADSP bypass targets

Update lpass lpi pin control driver, with clock optional check for ADSP
disabled platforms. This check required for distingushing ADSP based
platforms and ADSP bypass platforms.
In case of ADSP enabled platforms, where audio is routed through ADSP
macro and decodec GDSC Switches are triggered as clocks by pinctrl
driver and ADSP firmware controls them. So It's mandatory to enable
them in ADSP based solutions.
In case of ADSP bypass platforms clock voting is optional as these macro
and dcodec GDSC switches are maintained as power domains and operated from
lpass clock drivers.

Signed-off-by: Srinivasa Rao Mandadapu <quic_srivasam@...cinc.com>
---
 drivers/pinctrl/qcom/pinctrl-lpass-lpi.c        | 3 +++
 drivers/pinctrl/qcom/pinctrl-sc7280-lpass-lpi.c | 2 +-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/pinctrl/qcom/pinctrl-lpass-lpi.c b/drivers/pinctrl/qcom/pinctrl-lpass-lpi.c
index 74810ec..6e03529 100644
--- a/drivers/pinctrl/qcom/pinctrl-lpass-lpi.c
+++ b/drivers/pinctrl/qcom/pinctrl-lpass-lpi.c
@@ -388,6 +388,9 @@ int lpi_pinctrl_probe(struct platform_device *pdev)
 	pctrl->data = data;
 	pctrl->dev = &pdev->dev;
 
+	if (of_property_read_bool(np, "qcom,adsp-bypass-mode"))
+		data->is_clk_optional = true;
+
 	pctrl->clks[0].id = "core";
 	pctrl->clks[1].id = "audio";
 
diff --git a/drivers/pinctrl/qcom/pinctrl-sc7280-lpass-lpi.c b/drivers/pinctrl/qcom/pinctrl-sc7280-lpass-lpi.c
index 2add9a4..3fc7de1 100644
--- a/drivers/pinctrl/qcom/pinctrl-sc7280-lpass-lpi.c
+++ b/drivers/pinctrl/qcom/pinctrl-sc7280-lpass-lpi.c
@@ -141,7 +141,7 @@ static const struct lpi_pinctrl_variant_data sc7280_lpi_data = {
 	.ngroups = ARRAY_SIZE(sc7280_groups),
 	.functions = sc7280_functions,
 	.nfunctions = ARRAY_SIZE(sc7280_functions),
-	.is_clk_optional = true,
+	.is_clk_optional = false,
 };
 
 static const struct of_device_id lpi_pinctrl_of_match[] = {
-- 
2.7.4