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* [PATCH] powerpc: dts: turris1x.dts: Add channel labels for temperature sensor
@ 2022-09-30 12:39 Pali Rohár
  2022-09-30 12:40 ` Marek Behún
                   ` (2 more replies)
  0 siblings, 3 replies; 9+ messages in thread
From: Pali Rohár @ 2022-09-30 12:39 UTC (permalink / raw)
  To: Michael Ellerman, Nicholas Piggin, Christophe Leroy
  Cc: Marek Behún, Josef Schlehofer, linuxppc-dev, linux-kernel

Channel 0 of SA56004ED chip refers to internal SA56004ED chip sensor (chip
itself is located on the board) and channel 1 of SA56004ED chip refers to
external sensor which is connected to temperature diode of the P2020 CPU.

Fixes: 54c15ec3b738 ("powerpc: dts: Add DTS file for CZ.NIC Turris 1.x routers")
Signed-off-by: Pali Rohár <pali@kernel.org>
---
With this change userspace 'sensors' applications prints labels:

    $ sensors
    sa56004-i2c-0-4c
    Adapter: MPC adapter (i2c@3000)
    board:        +34.2°C  (low  =  +0.0°C, high = +70.0°C)
                           (crit = +85.0°C, hyst = +75.0°C)
    cpu:          +58.9°C  (low  =  +0.0°C, high = +70.0°C)
                           (crit = +85.0°C, hyst = +75.0°C)

And without this change it prints just generic tempX names:

    $ sensors
    sa56004-i2c-0-4c
    Adapter: MPC adapter (i2c@3000)
    temp1:        +43.0°C  (low  =  +0.0°C, high = +70.0°C)
                           (crit = +85.0°C, hyst = +75.0°C)
    temp2:        +63.4°C  (low  =  +0.0°C, high = +70.0°C)
                           (crit = +85.0°C, hyst = +75.0°C)
---
 arch/powerpc/boot/dts/turris1x.dts | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/arch/powerpc/boot/dts/turris1x.dts b/arch/powerpc/boot/dts/turris1x.dts
index 4033c554b06a..5b5278c32e43 100644
--- a/arch/powerpc/boot/dts/turris1x.dts
+++ b/arch/powerpc/boot/dts/turris1x.dts
@@ -69,6 +69,20 @@
 				interrupt-parent = <&gpio>;
 				interrupts = <12 IRQ_TYPE_LEVEL_LOW>, /* GPIO12 - ALERT pin */
 					     <13 IRQ_TYPE_LEVEL_LOW>; /* GPIO13 - CRIT pin */
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				/* Local temperature sensor (SA56004ED internal) */
+				channel@0 {
+					reg = <0>;
+					label = "board";
+				};
+
+				/* Remote temperature sensor (D+/D- connected to P2020 CPU Temperature Diode) */
+				channel@1 {
+					reg = <1>;
+					label = "cpu";
+				};
 			};
 
 			/* DDR3 SPD/EEPROM */
-- 
2.20.1


^ permalink raw reply related	[flat|nested] 9+ messages in thread

end of thread, other threads:[~2022-12-08 13:01 UTC | newest]

Thread overview: 9+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2022-09-30 12:39 [PATCH] powerpc: dts: turris1x.dts: Add channel labels for temperature sensor Pali Rohár
2022-09-30 12:40 ` Marek Behún
2022-09-30 12:46 ` Pali Rohár
2022-10-09 12:05   ` Pali Rohár
2022-11-01 22:43     ` Pali Rohár
2022-11-26 16:24       ` Pali Rohár
2022-11-29  1:18       ` Michael Ellerman
2022-11-29 18:56         ` Pali Rohár
2022-12-08 12:39 ` Michael Ellerman

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