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Message-Id: <20250820-thermal-rockchip-grf-warning-v2-2-c7e2d35017b8@kernel.org>
Date: Wed, 20 Aug 2025 19:40:48 +0200
From: Sebastian Reichel <sebastian.reichel@...labora.com>
To: "Rafael J. Wysocki" <rafael@...nel.org>, 
 Daniel Lezcano <daniel.lezcano@...aro.org>, Zhang Rui <rui.zhang@...el.com>, 
 Lukasz Luba <lukasz.luba@....com>, Heiko Stuebner <heiko@...ech.de>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>
Cc: Robin Murphy <robin.murphy@....com>, 
 Diederik de Haas <didi.debian@...ow.org>, linux-pm@...r.kernel.org, 
 linux-arm-kernel@...ts.infradead.org, linux-rockchip@...ts.infradead.org, 
 linux-kernel@...r.kernel.org, devicetree@...r.kernel.org, 
 kernel@...labora.com, Sebastian Reichel <sebastian.reichel@...labora.com>
Subject: [PATCH v2 2/3] thermal: rockchip: shut up GRF warning

Most of the recent Rockchip devices do not have a GRF associated
with the tsadc IP. Let's avoid printing a warning on those devices.

Signed-off-by: Sebastian Reichel <sebastian.reichel@...labora.com>
---
 drivers/thermal/rockchip_thermal.c | 23 ++++++++++++++++++-----
 1 file changed, 18 insertions(+), 5 deletions(-)

diff --git a/drivers/thermal/rockchip_thermal.c b/drivers/thermal/rockchip_thermal.c
index 7b18a705dfade6fa7318b28c2b57544a4446c1cc..c49ddf70f86e7beaf0190b1b3e93f5e6b2f72b2c 100644
--- a/drivers/thermal/rockchip_thermal.c
+++ b/drivers/thermal/rockchip_thermal.c
@@ -74,6 +74,7 @@ struct chip_tsadc_table {
  * @tshut_temp: the hardware-controlled shutdown temperature value, with no trim
  * @tshut_mode: the hardware-controlled shutdown mode (0:CRU 1:GPIO)
  * @tshut_polarity: the hardware-controlled active polarity (0:LOW 1:HIGH)
+ * @grf_required: true, if a GRF is required for proper functionality
  * @initialize: SoC special initialize tsadc controller method
  * @irq_ack: clear the interrupt
  * @control: enable/disable method for the tsadc controller
@@ -97,6 +98,9 @@ struct rockchip_tsadc_chip {
 	enum tshut_mode tshut_mode;
 	enum tshut_polarity tshut_polarity;
 
+	/* GRF availability */
+	bool grf_required;
+
 	/* Chip-wide methods */
 	void (*initialize)(struct regmap *grf,
 			   void __iomem *reg, enum tshut_polarity p);
@@ -1098,6 +1102,7 @@ static const struct rockchip_tsadc_chip px30_tsadc_data = {
 	/* cpu, gpu */
 	.chn_offset = 0,
 	.chn_num = 2, /* 2 channels for tsadc */
+	.grf_required = true,
 	.tshut_mode = TSHUT_MODE_CRU, /* default TSHUT via CRU */
 	.tshut_temp = 95000,
 	.initialize = rk_tsadcv4_initialize,
@@ -1119,6 +1124,7 @@ static const struct rockchip_tsadc_chip rv1108_tsadc_data = {
 	/* cpu */
 	.chn_offset = 0,
 	.chn_num = 1, /* one channel for tsadc */
+	.grf_required = false,
 	.tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */
 	.tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */
 	.tshut_temp = 95000,
@@ -1141,6 +1147,7 @@ static const struct rockchip_tsadc_chip rk3228_tsadc_data = {
 	/* cpu */
 	.chn_offset = 0,
 	.chn_num = 1, /* one channel for tsadc */
+	.grf_required = false,
 	.tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */
 	.tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */
 	.tshut_temp = 95000,
@@ -1163,6 +1170,7 @@ static const struct rockchip_tsadc_chip rk3288_tsadc_data = {
 	/* cpu, gpu */
 	.chn_offset = 1,
 	.chn_num = 2, /* two channels for tsadc */
+	.grf_required = false,
 	.tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */
 	.tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */
 	.tshut_temp = 95000,
@@ -1185,6 +1193,7 @@ static const struct rockchip_tsadc_chip rk3328_tsadc_data = {
 	/* cpu */
 	.chn_offset = 0,
 	.chn_num = 1, /* one channels for tsadc */
+	.grf_required = false,
 	.tshut_mode = TSHUT_MODE_CRU, /* default TSHUT via CRU */
 	.tshut_temp = 95000,
 	.initialize = rk_tsadcv2_initialize,
@@ -1206,6 +1215,7 @@ static const struct rockchip_tsadc_chip rk3366_tsadc_data = {
 	/* cpu, gpu */
 	.chn_offset = 0,
 	.chn_num = 2, /* two channels for tsadc */
+	.grf_required = true,
 	.tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */
 	.tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */
 	.tshut_temp = 95000,
@@ -1228,6 +1238,7 @@ static const struct rockchip_tsadc_chip rk3368_tsadc_data = {
 	/* cpu, gpu */
 	.chn_offset = 0,
 	.chn_num = 2, /* two channels for tsadc */
+	.grf_required = false,
 	.tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */
 	.tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */
 	.tshut_temp = 95000,
@@ -1250,6 +1261,7 @@ static const struct rockchip_tsadc_chip rk3399_tsadc_data = {
 	/* cpu, gpu */
 	.chn_offset = 0,
 	.chn_num = 2, /* two channels for tsadc */
+	.grf_required = true,
 	.tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */
 	.tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */
 	.tshut_temp = 95000,
@@ -1272,6 +1284,7 @@ static const struct rockchip_tsadc_chip rk3568_tsadc_data = {
 	/* cpu, gpu */
 	.chn_offset = 0,
 	.chn_num = 2, /* two channels for tsadc */
+	.grf_required = true,
 	.tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */
 	.tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */
 	.tshut_temp = 95000,
@@ -1294,6 +1307,7 @@ static const struct rockchip_tsadc_chip rk3576_tsadc_data = {
 	/* top, big_core, little_core, ddr, npu, gpu */
 	.chn_offset = 0,
 	.chn_num = 6, /* six channels for tsadc */
+	.grf_required = false,
 	.tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */
 	.tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */
 	.tshut_temp = 95000,
@@ -1318,6 +1332,7 @@ static const struct rockchip_tsadc_chip rk3588_tsadc_data = {
 	/* top, big_core0, big_core1, little_core, center, gpu, npu */
 	.chn_offset = 0,
 	.chn_num = 7, /* seven channels for tsadc */
+	.grf_required = false,
 	.tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */
 	.tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */
 	.tshut_temp = 95000,
@@ -1594,12 +1609,10 @@ static int rockchip_configure_from_dt(struct device *dev,
 		return -EINVAL;
 	}
 
-	/* The tsadc wont to handle the error in here since some SoCs didn't
-	 * need this property.
-	 */
 	thermal->grf = syscon_regmap_lookup_by_phandle(np, "rockchip,grf");
-	if (IS_ERR(thermal->grf))
-		dev_warn(dev, "Missing rockchip,grf property\n");
+	if (IS_ERR(thermal->grf) && thermal->chip->grf_required)
+		return dev_err_probe(dev, PTR_ERR(thermal->grf),
+				     "Missing rockchip,grf property\n");
 
 	rockchip_get_trim_configuration(dev, np, thermal);
 

-- 
2.50.1

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