openwrt/target/linux/layerscape/patches-5.4/802-can-0025-can-flexcan-add-LPSR-mode-support-for-i.MX7D.patch
John Audia a47279154e kernel: bump 5.4 to 5.4.75
Manually rebased patches:
  bcm27xx:
    patches-5.4/950-0267-xhci-add-quirk-for-host-controllers-that-don-t-updat.patch
  bcm53xx:
    patches-5.4/180-usb-xhci-add-support-for-performing-fake-doorbell.patch
  layerscape:
    patches-5.4/802-can-0025-can-flexcan-add-LPSR-mode-support-for-i.MX7D.patch
    patches-5.4/808-i2c-0002-MLK-10893-i2c-imx-add-irqf_no_suspend.patch
    patches-5.4/820-usb-0016-MLK-16735-usb-host-add-XHCI_CDNS_HOST-flag.patch

Removed since could be reverse-applied by quilt:
  mediatek:
    patches-5.4/0700-arm-dts-mt7623-add-missing-pause-for-switchport.patch

All modifications made by update_kernel.sh

Build system: x86_64
Build-tested: ipq806x/R7800, ath79/generic, bcm27xx/bcm2711, x86_64
Run-tested: ipq806x/R7800, x86_64

No dmesg regressions, everything functional

Signed-off-by: John Audia <graysky@archlinux.us>
Tested-by: Curtis Deptuck <curtdept@me.com> [x86_64]

Rebase of 802-can-0025-can-flexcan-add-LPSR-mode-support-for-i.MX7D.patch
Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Signed-off-by: Kevin Darbyshire-Bryant <kevin@darbyshire-bryant.me.uk>
2020-11-10 13:11:32 +01:00

53 lines
1.5 KiB
Diff

From 211c20a459a0fd4868ed22ecfc2b2186d9df6da0 Mon Sep 17 00:00:00 2001
From: Joakim Zhang <qiangqing.zhang@nxp.com>
Date: Tue, 30 Jul 2019 14:43:25 +0800
Subject: [PATCH] can: flexcan: add LPSR mode support for i.MX7D
For i.MX7D LPSR mode, the controller will lost power and got the
configuration state lost after system resume back.
So we need to set pinctrl state again and re-start chip to do
re-configuration after resume.
For wakeup case, it should not set pinctrl to sleep state by
pinctrl_pm_select_sleep_state.
For interface is not up before suspend case, we don't need
re-configure as it will be configured by user later by interface up.
Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
---
drivers/net/can/flexcan.c | 21 ++++++++++++++-------
1 file changed, 14 insertions(+), 7 deletions(-)
--- a/drivers/net/can/flexcan.c
+++ b/drivers/net/can/flexcan.c
@@ -26,6 +26,7 @@
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/regulator/consumer.h>
+#include <linux/pinctrl/consumer.h>
#include <linux/regmap.h>
#define DRV_NAME "flexcan"
@@ -1954,9 +1955,7 @@ static int __maybe_unused flexcan_suspen
if (err)
return err;
} else {
- err = flexcan_chip_disable(priv);
- if (err)
- return err;
+ flexcan_chip_stop(dev);
}
netif_stop_queue(dev);
netif_device_detach(dev);
@@ -1982,7 +1981,9 @@ static int __maybe_unused flexcan_resume
if (err)
return err;
} else {
- err = flexcan_chip_enable(priv);
+ err = flexcan_chip_start(dev);
+ if (err)
+ return err;
}
}