linux-kernel - [PATCH v3 4/6] clk: qcom: Add lpass audio clock controller driver for SC8280XP

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Message-Id: <20230608125315.11454-5-srinivas.kandagatla@linaro.org>
Date:   Thu,  8 Jun 2023 13:53:13 +0100
From:   Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To:     andersson@...nel.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org
Cc:     johan+linaro@...nel.org, agross@...nel.org,
        konrad.dybcio@...aro.org, mturquette@...libre.com,
        sboyd@...nel.org, conor+dt@...nel.org,
        linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Subject: [PATCH v3 4/6] clk: qcom: Add lpass audio clock controller driver for SC8280XP

Add support for the lpass audio clock controller found on SC8280XP based
devices. This would allow lpass peripheral loader drivers to control the
clocks and bring the subsystems out of reset.

Currently this patch only supports resets as the Q6DSP is in control of
LPASS IP which manages most of the clocks via Q6PRM service on GPR rpmsg
channel.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Reviewed-by: Johan Hovold <johan+linaro@...nel.org>
---
 drivers/clk/qcom/lpasscc-sc8280xp.c | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/drivers/clk/qcom/lpasscc-sc8280xp.c b/drivers/clk/qcom/lpasscc-sc8280xp.c
index 4a0470fc6153..43b37ce397cf 100644
--- a/drivers/clk/qcom/lpasscc-sc8280xp.c
+++ b/drivers/clk/qcom/lpasscc-sc8280xp.c
@@ -15,6 +15,26 @@
 #include "common.h"
 #include "reset.h"
 
+static const struct qcom_reset_map lpass_audiocc_sc8280xp_resets[] = {
+	[LPASS_AUDIO_SWR_RX_CGCR] =  { 0xa0, 1 },
+	[LPASS_AUDIO_SWR_WSA_CGCR] = { 0xb0, 1 },
+	[LPASS_AUDIO_SWR_WSA2_CGCR] =  { 0xd8, 1 },
+};
+
+static struct regmap_config lpass_audiocc_sc8280xp_regmap_config = {
+	.reg_bits = 32,
+	.reg_stride = 4,
+	.val_bits = 32,
+	.name = "lpass-audio-csr",
+	.max_register = 0x1000,
+};
+
+static const struct qcom_cc_desc lpass_audiocc_sc8280xp_reset_desc = {
+	.config = &lpass_audiocc_sc8280xp_regmap_config,
+	.resets = lpass_audiocc_sc8280xp_resets,
+	.num_resets = ARRAY_SIZE(lpass_audiocc_sc8280xp_resets),
+};
+
 static const struct qcom_reset_map lpasscc_sc8280xp_resets[] = {
 	[LPASS_AUDIO_SWR_TX_CGCR] = { 0xc010, 1 },
 };
@@ -35,6 +55,9 @@ static const struct qcom_cc_desc lpasscc_sc8280xp_reset_desc = {
 
 static const struct of_device_id lpasscc_sc8280xp_match_table[] = {
 	{
+		.compatible = "qcom,sc8280xp-lpassaudiocc",
+		.data = &lpass_audiocc_sc8280xp_reset_desc,
+	}, {
 		.compatible = "qcom,sc8280xp-lpasscc",
 		.data = &lpasscc_sc8280xp_reset_desc,
 	},
-- 
2.25.1