From: Daniil Gnusarev <gnusarevda@basealt.ru> To: devel-kernel@lists.altlinux.org Subject: [d-kernel] [PATCH 24/39] pm: disable all sleep states on Baikal-M based boards Date: Mon, 14 Oct 2024 18:02:05 +0400 Message-ID: <20241014140221.535985-25-gnusarevda@basealt.ru> (raw) In-Reply-To: <20241014140221.535985-1-gnusarevda@basealt.ru> From: Alexey Sheplyakov <asheplyakov@basealt.ru> These days desktop environments try to put computer into a sleep state after a certain period of inactivity. TF307 board is able to enter a sleep state, however it does *NOT* wakeup via power button or keyboard/mouse. Apparently the only wakeup sources on TF307 board are - Real time clock (RTC) - Ethernet Surprisingly BMC (board management controller) is NOT a wakeup source. Also tp_bmc driver does not use interrupts, and polls the device instead. Perhaps BMC is unable to generate interrupts at all? To avoid the problem disable all sleep states (including s2idle) on Baikal-M systems Signed-off-by: Alexey Sheplyakov <asheplyakov@basealt.ru> X-DONTUPSTREAM X-feature-Baikal-M --- kernel/power/suspend.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/kernel/power/suspend.c b/kernel/power/suspend.c index 3aae526cc4aac..1fd2b06b2a91c 100644 --- a/kernel/power/suspend.c +++ b/kernel/power/suspend.c @@ -30,6 +30,7 @@ #include <trace/events/power.h> #include <linux/compiler.h> #include <linux/moduleparam.h> +#include <linux/of.h> #include "power.h" @@ -250,6 +251,18 @@ EXPORT_SYMBOL_GPL(suspend_valid_only_mem); static bool sleep_state_supported(suspend_state_t state) { +#ifdef CONFIG_OF + if (of_device_is_compatible(of_root, "baikal,baikal-m") || + of_device_is_compatible(of_root, "baikal,bm1000")) { + /* XXX: there are no wakeup sources except RTC and Ethernet + * on BE-M1000 based boards. In other words, no way to wakeup + * system via the keyboard or power button. + * Thus even s2idle is unusable on BE-M1000 systems. + */ + pr_info("%s: no useful wakeup sources on Baikal-M", __func__); + return false; + } +#endif return state == PM_SUSPEND_TO_IDLE || (valid_state(state) && !cxl_mem_active()); } -- 2.42.2
next prev parent reply other threads:[~2024-10-14 14:02 UTC|newest] Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top 2024-10-14 14:01 [d-kernel] [PATCH 00/39] Support Baikal-M in un-def in p11 Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 01/39] Baikal Electronics SoC family Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 02/39] Clk: Add clock drivers for Baikal BE-M1000 with new firmware Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 03/39] USB: Add support for Baikal USB PHY Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 04/39] PCI: Add support for PCIe controller for Baikal BE-M1000 Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 05/39] AHCI SATA: Add support " Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 06/39] UART: Add support for UART " Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 07/39] cpufreq-dt: don't load on Baikal-M SoC Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 08/39] Sound: add support for Baikal BE-M1000 I2S Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 09/39] sound: baikal-i2s: paper over RX overrun warnings on Baikal-M Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 10/39] net: stmmac: support of Baikal-BE1000 SoCs GMAC Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 11/39] net: fwnode_get_phy_id: consider all compatible strings Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 12/39] hwmon: bt1-pvt: access registers via pvt_{readl, writel} helpers Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 13/39] hwmon: bt1-pvt: define pvt_readl/pvt_writel for Baikal-M SoC Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 14/39] hwmon: bt1-pvt: adjusted probing " Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 15/39] hwmon: bt1-pvt: added compatible baikal, pvt Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 16/39] PVT: support register addressing with new firmware Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 17/39] drm: add Baikal-M SoC video display unit driver Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 18/39] drm/bridge: dw-hdmi: support ahb audio hw revision 0x2a Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 19/39] dt-bindings: dw-hdmi: added ahb-audio-regshift Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 20/39] drm/bridge: dw-hdmi: force ahb audio register offset for Baikal-M Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 21/39] drm/panfrost: forcibly set dma-coherent on Baikal-M Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 22/39] drm/panfrost: disable devfreq " Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 23/39] bmc: add board management controller driver Daniil Gnusarev 2024-10-14 14:02 ` Daniil Gnusarev [this message] 2024-10-14 14:02 ` [d-kernel] [PATCH 25/39] sound: dwc-i2s: paper over RX overrun warnings on Baikal-M Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 26/39] sound: dwc-i2s: request all IRQs specified in device tree Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 27/39] usb: dwc3: of-simple: added compatible string for Baikal-M SoC Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 28/39] serial: 8250_dw: verify clock rate in dw8250_set_termios Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 29/39] clk: use "cmu-id" if there is no "reg" in devicetree Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 30/39] pci: baikal-pcie: driver compatibility with SDK earlier than 5.7 Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 31/39] pci: baikal-pcie: driver compatibility with SDK versions 5.4 Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 32/39] dw-pcie: refuse to load on Baikal-M with recent firmware Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 33/39] drm: baikal-vdu: driver compatibility with SDK earlier than 5.9 Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 34/39] input: new driver - serdev-serio Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 35/39] input: added TF307 serio PS/2 emulator driver Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 36/39] input: tp_serio: catch up API changes Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 37/39] drm: baikal-m: add vblank events, fix mode switching Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 38/39] drm: baikal-vdu: disable backlight driver loading Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 39/39] config-aarch64: enable more configs for baikal-m support Daniil Gnusarev 2024-10-14 14:28 ` [d-kernel] [PATCH 00/39] Support Baikal-M in un-def in p11 Vitaly Chikunov
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