ca5c695a45
Deleted following upstreamed patches: bcm27xx: 950-0006-drm-vc4-hdmi-Fix-HPD-GPIO-detection.patch bcm27xx: 950-0420-drm-vc4-Adopt-the-dma-configuration-from-the-HVS-or-.patch bcm27xx: 950-0425-drm-vc4-A-present-but-empty-dmas-disables-audio.patch bcm27xx: 950-0432-vc4-drm-Avoid-full-hdmi-audio-fifo-writes.patch bcm27xx: 950-0433-vc4-drm-vc4_plane-Remove-subpixel-positioning-check.patch bcm27xx: 950-0435-drm-vc4-Correct-pixel-order-for-DSI0.patch bcm27xx: 950-0436-drm-vc4-Register-dsi0-as-the-correct-vc4-encoder-typ.patch bcm27xx: 950-0437-drm-vc4-Fix-dsi0-interrupt-support.patch bcm27xx: 950-0438-drm-vc4-Add-correct-stop-condition-to-vc4_dsi_encode.patch bcm27xx: 950-0443-drm-vc4-Fix-timings-for-interlaced-modes.patch bcm27xx: 950-0445-drm-vc4-Fix-margin-calculations-for-the-right-bottom.patch bcm27xx: 950-0475-drm-vc4-Reset-HDMI-MISC_CONTROL-register.patch bcm27xx: 950-0476-drm-vc4-Release-workaround-buffer-and-DMA-in-error-p.patch bcm27xx: 950-0477-drm-vc4-Correct-DSI-divider-calculations.patch bcm27xx: 950-0664-drm-vc4-dsi-Correct-max-divider-to-255-not-7.patch bcm53xx: 072-next-ARM_dts_BCM53015-add-mr26.patch mediatek: 920-linux-next-dts-mt7622-bpi-r64-fix-wps-button.patch Manually rebased following patches: bcm27xx: 950-0004-drm-vc4-hdmi-Remove-the-DDC-probing-for-status-detec.patch bcm27xx: 950-0700-net-phy-lan87xx-Decrease-phy-polling-rate.patch bcm27xx: 950-0711-drm-vc4-Rename-bridge-to-out_bridge.patch bcm27xx: 950-0713-drm-vc4-Remove-splitting-the-bridge-chain-from-the-d.patch bcm27xx: 950-0715-drm-vc4-Convert-vc4_dsi-to-using-a-bridge-instead-of.patch bcm27xx: 950-0787-vc4-drm-vc4_plane-Keep-fractional-source-coords-insi.patch bcm27xx: 950-0914-mmc-block-Don-t-do-single-sector-reads-during-recove.patch Runtime tested on turris-omnia and glinet-b1300. Tested-by: John Audia <therealgraysky@proton.me> [bcm2711/RPi4B, mt7622/RT3200] Signed-off-by: Petr Štetiar <ynezz@true.cz>
56 lines
1.6 KiB
Diff
56 lines
1.6 KiB
Diff
From 01649f43afb30df3c7450fd09c04a5a8ee6cb2c1 Mon Sep 17 00:00:00 2001
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From: Phil Elwell <phil@raspberrypi.com>
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Date: Thu, 3 Feb 2022 15:51:41 +0000
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Subject: [PATCH] net: phy: lan87xx: Decrease phy polling rate
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Polling at 100Hz for 1.5s consumes quite a bit of kworker time with no
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obvious benefit. Reduce that polling rate to ~6Hz.
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To further save CPU and power, defer the next poll if no energy is
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detected.
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See: https://github.com/raspberrypi/linux/issues/4780
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Signed-off-by: Phil Elwell <phil@raspberrypi.com>
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---
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drivers/net/phy/smsc.c | 10 +++++++++-
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1 file changed, 9 insertions(+), 1 deletion(-)
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--- a/drivers/net/phy/smsc.c
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+++ b/drivers/net/phy/smsc.c
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@@ -220,6 +220,8 @@ static int lan87xx_read_status(struct ph
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int err = genphy_read_status(phydev);
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if (!phydev->link && priv->energy_enable && phydev->irq == PHY_POLL) {
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+ int energy_detected;
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+
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/* Disable EDPD to wake up PHY */
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int rc = phy_read(phydev, MII_LAN83C185_CTRL_STATUS);
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if (rc < 0)
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@@ -235,7 +237,7 @@ static int lan87xx_read_status(struct ph
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*/
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read_poll_timeout(phy_read, rc,
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rc & MII_LAN83C185_ENERGYON || rc < 0,
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- 10000, 1500000, true, phydev,
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+ 150000, 1500000, true, phydev,
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MII_LAN83C185_CTRL_STATUS);
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if (rc < 0)
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return rc;
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@@ -245,10 +247,16 @@ static int lan87xx_read_status(struct ph
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if (rc < 0)
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return rc;
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+ energy_detected = !!(rc & MII_LAN83C185_ENERGYON);
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+
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rc = phy_write(phydev, MII_LAN83C185_CTRL_STATUS,
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rc | MII_LAN83C185_EDPWRDOWN);
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if (rc < 0)
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return rc;
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+
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+ /* Save CPU and power by deferring the next poll */
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+ if (!energy_detected)
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+ msleep(2000);
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}
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return err;
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