Thread (29 messages) 29 messages, 6 authors, 2014-09-17

Re: [PATCH v4 3/4] ARM: dts: add main Thermal info to rk3288

From: Heiko Stübner <heiko@sntech.de>
Date: 2014-09-11 14:30:20
Also in: linux-arm-kernel, linux-pm, lkml

Hi Caesar,

Am Mittwoch, 10. September 2014, 10:49:05 schrieb Caesar Wang:
Hi Heiko,

在 2014年09月09日 19:37, Heiko Stübner 写道:
quoted
Am Mittwoch, 3. September 2014, 10:10:38 schrieb Caesar Wang:
quoted
Signed-off-by: Caesar Wang <redacted>
---

  arch/arm/boot/dts/rk3288.dtsi | 18 ++++++++++++++++++
  1 file changed, 18 insertions(+)
diff --git a/arch/arm/boot/dts/rk3288.dtsi
b/arch/arm/boot/dts/rk3288.dtsi
index 36be7bb..3d672e3 100644
--- a/arch/arm/boot/dts/rk3288.dtsi
+++ b/arch/arm/boot/dts/rk3288.dtsi
[...]
quoted
quoted
@@ -611,5 +622,12 @@

  				rockchip,pins = <5 15 3 &pcfg_pull_none>;
  			
  			};
  		
  		};

+
+		tsadc {
+			tsadc_int: tsadc-int {
+				rockchip,pins = <0 10 RK_FUNC_1 &pcfg_pull_up>;
+			};
+		};
After looking this up in the schematics I see that this is the
overtemperature-protection output pin ... labeled OTP_OUT.
So I'd think the pinconfig should reflect this pin-name, especially as
tsadc-int suggests, that this would be an interrupt leading into the
tsadc, while in fact it is an output to a separate circuit.
Maybe,I guess  your mean as the follows .
Please correct it and  Laugh out if I got it wrong.
I'll never laugh ... just try get the best solution / trying to understand 
backgrounds.
tsadc {
             otp_out: otp-out {
                 rockchip,pins = <0 10 RK_FUNC_GPIO &pcfg_pull_none>;
             };

             tsadc_int: tsadc-int {
                 rockchip,pins = <0 10 RK_FUNC_1 &pcfg_pull_none>;
             };
         };
Then,I deal with the otp_out in thermal driver.
I believe The "otp_out" will restart board if it's a high active.

tsadc_int: tsadc-int {
+				rockchip,pins = <0 10 RK_FUNC_1 &pcfg_pull_up>;
+			};

But,I think the about will be implemented in thermal driver.
I only meant the pin name (tsadc-int -> otp-out). In the schmatics the pin 
(controlled by the tsadc) is labeled otp_out and leads to the overtemperature 
protection circuit as expected. And as it's controlled by the tsadc, it should 
of course stay as the desired func_1.


Heiko

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