linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Kiran Gunda <kgunda@codeaurora.org>
To: bjorn.andersson@linaro.org, jingoohan1@gmail.com,
	lee.jones@linaro.org, b.zolnierkie@samsung.com,
	dri-devel@lists.freedesktop.org, daniel.thompson@linaro.org,
	jacek.anaszewski@gmail.com, pavel@ucw.cz, robh+dt@kernel.org,
	mark.rutland@arm.com, linux-leds@vger.kernel.org,
	devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
	Dan Murphy <dmurphy@ti.com>
Cc: linux-arm-msm@vger.kernel.org, Kiran Gunda <kgunda@codeaurora.org>
Subject: [PATCH V9 1/6] backlight: qcom-wled: Add new properties for PMI8998.
Date: Wed, 23 Oct 2019 12:36:58 +0530	[thread overview]
Message-ID: <1571814423-6535-2-git-send-email-kgunda@codeaurora.org> (raw)
In-Reply-To: <1571814423-6535-1-git-send-email-kgunda@codeaurora.org>

Update the bindings with the new properties used for
PMI8998.

Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Daniel Thompson <daniel.thompson@linaro.org>
---
 .../bindings/leds/backlight/qcom-wled.txt          | 74 ++++++++++++++++++----
 1 file changed, 63 insertions(+), 11 deletions(-)

diff --git a/Documentation/devicetree/bindings/leds/backlight/qcom-wled.txt b/Documentation/devicetree/bindings/leds/backlight/qcom-wled.txt
index 14f28f2..c06863b 100644
--- a/Documentation/devicetree/bindings/leds/backlight/qcom-wled.txt
+++ b/Documentation/devicetree/bindings/leds/backlight/qcom-wled.txt
@@ -20,7 +20,7 @@ platforms. The PMIC is connected to the host processor via SPMI bus.
 - default-brightness
 	Usage:        optional
 	Value type:   <u32>
-	Definition:   brightness value on boot, value from: 0-4095
+	Definition:   brightness value on boot, value from: 0-4095.
 		      Default: 2048
 
 - label
@@ -48,20 +48,24 @@ platforms. The PMIC is connected to the host processor via SPMI bus.
 - qcom,current-limit
 	Usage:        optional
 	Value type:   <u32>
-	Definition:   mA; per-string current limit
-		      value: For pm8941: from 0 to 25 with 5 mA step
-			     Default 20 mA.
-			     For pmi8998: from 0 to 30 with 5 mA step
-			     Default 25 mA.
+	Definition:   mA; per-string current limit; value from 0 to 25 with
+		      1 mA step. Default 20 mA.
+		      This property is supported only for pm8941.
+
+- qcom,current-limit-microamp
+	Usage:        optional
+	Value type:   <u32>
+	Definition:   uA; per-string current limit; value from 0 to 30000 with
+		      2500 uA step. Default 25 mA.
 
 - qcom,current-boost-limit
 	Usage:        optional
 	Value type:   <u32>
 	Definition:   mA; boost current limit.
 		      For pm8941: one of: 105, 385, 525, 805, 980, 1260, 1400,
-		      1680. Default: 805 mA
+		      1680. Default: 805 mA.
 		      For pmi8998: one of: 105, 280, 450, 620, 970, 1150, 1300,
-		      1500. Default: 970 mA
+		      1500. Default: 970 mA.
 
 - qcom,switching-freq
 	Usage:        optional
@@ -76,15 +80,62 @@ platforms. The PMIC is connected to the host processor via SPMI bus.
 	Usage:        optional
 	Value type:   <u32>
 	Definition:   V; Over-voltage protection limit; one of:
-		      27, 29, 32, 35. default: 29V
+		      27, 29, 32, 35. Default: 29V
 		      This property is supported only for PM8941.
 
+- qcom,ovp-millivolt
+	Usage:        optional
+	Value type:   <u32>
+	Definition:   mV; Over-voltage protection limit;
+		      For pmi8998: one of 18100, 19600, 29600, 31100.
+		      Default 29600 mV.
+		      If this property is not specified for PM8941, it
+		      falls back to "qcom,ovp" property.
+
 - qcom,num-strings
 	Usage:        optional
 	Value type:   <u32>
 	Definition:   #; number of led strings attached;
-		      value from 1 to 3. default: 2
-		      This property is supported only for PM8941.
+		      value: For PM8941 from 1 to 3. Default: 2
+			     For PMI8998 from 1 to 4.
+
+- interrupts
+	Usage:        optional
+	Value type:   <prop encoded array>
+	Definition:   Interrupts associated with WLED. This should be
+		      "short" and "ovp" interrupts. Interrupts can be
+		      specified as per the encoding listed under
+		      Documentation/devicetree/bindings/spmi/
+		      qcom,spmi-pmic-arb.txt.
+
+- interrupt-names
+	Usage:        optional
+	Value type:   <string>
+	Definition:   Interrupt names associated with the interrupts.
+		      Must be "short" and "ovp". The short circuit detection
+		      is not supported for PM8941.
+
+- qcom,enabled-strings
+	Usage:        optional
+	Value tyoe:   <u32 array>
+	Definition:   Array of the WLED strings numbered from 0 to 3. Each
+		      string of leds are operated individually. Specify the
+		      list of strings used by the device. Any combination of
+		      led strings can be used.
+
+- qcom,external-pfet
+	Usage:        optional
+	Value type:   <bool>
+	Definition:   Specify if external PFET control for short circuit
+		      protection is used. This property is supported only
+		      for PMI8998.
+
+- qcom,auto-string-detection
+	Usage:        optional
+	Value type:   <bool>
+	Definition:   Enables auto-detection of the WLED string configuration.
+		      This feature is not supported for PM8941.
+
 
 Example:
 
@@ -99,4 +150,5 @@ pm8941-wled@d800 {
 	qcom,switching-freq = <1600>;
 	qcom,ovp = <29>;
 	qcom,num-strings = <2>;
+	qcom,enabled-strings = <0 1>;
 };
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
 a Linux Foundation Collaborative Project


  reply	other threads:[~2019-10-23  7:07 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-23  7:06 [PATCH V9 0/6] backlight: qcom-wled: Support for QCOM wled driver Kiran Gunda
2019-10-23  7:06 ` Kiran Gunda [this message]
2019-10-31  8:58   ` [PATCH V9 1/6] backlight: qcom-wled: Add new properties for PMI8998 Lee Jones
2019-11-01  5:42     ` kgunda
2019-10-23  7:06 ` [PATCH V9 2/6] backlight: qcom-wled: Rename PM8941* to WLED3 Kiran Gunda
2019-10-23  7:07 ` [PATCH V9 3/6] backlight: qcom-wled: Restructure the driver for WLED3 Kiran Gunda
2019-10-23  7:07 ` [PATCH V9 4/6] backlight: qcom-wled: Add support for WLED4 peripheral Kiran Gunda
2019-10-23  7:07 ` [PATCH V9 5/6] backlight: qcom-wled: add support for short circuit handling Kiran Gunda
2019-10-23  7:07 ` [PATCH V9 6/6] backlight: qcom-wled: Add auto string detection logic Kiran Gunda
2019-10-23 15:43   ` Daniel Thompson

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1571814423-6535-2-git-send-email-kgunda@codeaurora.org \
    --to=kgunda@codeaurora.org \
    --cc=b.zolnierkie@samsung.com \
    --cc=bjorn.andersson@linaro.org \
    --cc=daniel.thompson@linaro.org \
    --cc=devicetree@vger.kernel.org \
    --cc=dmurphy@ti.com \
    --cc=dri-devel@lists.freedesktop.org \
    --cc=jacek.anaszewski@gmail.com \
    --cc=jingoohan1@gmail.com \
    --cc=lee.jones@linaro.org \
    --cc=linux-arm-msm@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-leds@vger.kernel.org \
    --cc=mark.rutland@arm.com \
    --cc=pavel@ucw.cz \
    --cc=robh+dt@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).