Patch "pinctrl: qcom: lpass-lpi: set output value before enabling output" has been added to the 6.2-stable tree

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



This is a note to let you know that I've just added the patch titled

    pinctrl: qcom: lpass-lpi: set output value before enabling output

to the 6.2-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     pinctrl-qcom-lpass-lpi-set-output-value-before-enabling-output.patch
and it can be found in the queue-6.2 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From 163bfb0cb1f6fbf961cf912cbde57399ea1ae0e8 Mon Sep 17 00:00:00 2001
From: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
Date: Thu, 9 Mar 2023 16:49:46 +0100
Subject: pinctrl: qcom: lpass-lpi: set output value before enabling output

From: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>

commit 163bfb0cb1f6fbf961cf912cbde57399ea1ae0e8 upstream.

As per Hardware Programming Guide, when configuring pin as output,
set the pin value before setting output-enable (OE).  Similar approach
is in main SoC TLMM pin controller.

Cc: <stable@xxxxxxxxxxxxxxx>
Fixes: 6e261d1090d6 ("pinctrl: qcom: Add sm8250 lpass lpi pinctrl driver")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
Reviewed-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20230309154949.658380-1-krzysztof.kozlowski@xxxxxxxxxx
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/pinctrl/qcom/pinctrl-lpass-lpi.c |   14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

--- a/drivers/pinctrl/qcom/pinctrl-lpass-lpi.c
+++ b/drivers/pinctrl/qcom/pinctrl-lpass-lpi.c
@@ -221,6 +221,15 @@ static int lpi_config_set(struct pinctrl
 		}
 	}
 
+	/*
+	 * As per Hardware Programming Guide, when configuring pin as output,
+	 * set the pin value before setting output-enable (OE).
+	 */
+	if (output_enabled) {
+		val = u32_encode_bits(value ? 1 : 0, LPI_GPIO_VALUE_OUT_MASK);
+		lpi_gpio_write(pctrl, group, LPI_GPIO_VALUE_REG, val);
+	}
+
 	val = lpi_gpio_read(pctrl, group, LPI_GPIO_CFG_REG);
 
 	u32p_replace_bits(&val, pullup, LPI_GPIO_PULL_MASK);
@@ -230,11 +239,6 @@ static int lpi_config_set(struct pinctrl
 
 	lpi_gpio_write(pctrl, group, LPI_GPIO_CFG_REG, val);
 
-	if (output_enabled) {
-		val = u32_encode_bits(value ? 1 : 0, LPI_GPIO_VALUE_OUT_MASK);
-		lpi_gpio_write(pctrl, group, LPI_GPIO_VALUE_REG, val);
-	}
-
 	return 0;
 }
 


Patches currently in stable-queue which might be from krzysztof.kozlowski@xxxxxxxxxx are

queue-6.2/soundwire-qcom-correct-setting-ignore-bit-on-v1.5.1.patch
queue-6.2/pinctrl-qcom-lpass-lpi-set-output-value-before-enabling-output.patch
queue-6.2/cpufreq-qcom-cpufreq-hw-fix-double-io-unmap-and-resource-release-on-exit.patch



[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux