Hi Bo,
Since commit b2cb2ae22278f1918f7526b89760ee00b4a81393 ("mfd: axp20x:
Generalise handling without interrupt"), the "interrupts = <0>;" line
can be removed. It was kept to fix a driver issue that driver would try
to find an IRQ line for power button function of the PMIC.
I'll send a patch to fix it.
Best Regards,
Shengyu
在 2024/3/5 16:23, Bo Gan 写道:
On 6/6/23 3:56 AM, Mason Huo wrote:The VisionFive 2 board has an embedded pmic axp15060, which supports the cpu DVFS through the dcdc2 regulator. This patch enables axp15060 pmic and configs the dcdc2. Signed-off-by: Mason Huo <mason.huo@xxxxxxxxxxxxxxxx> --- .../starfive/jh7110-starfive-visionfive-2.dtsi | 17 +++++++++++++++++ 1 file changed, 17 insertions(+)diff --git a/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi b/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsiindex 2a6d81609284..9714da5550d7 100644 --- a/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi +++ b/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi @@ -114,6 +114,23 @@ &i2c5 { pinctrl-names = "default"; pinctrl-0 = <&i2c5_pins>; status = "okay"; + + axp15060: pmic@36 { + compatible = "x-powers,axp15060"; + reg = <0x36>; + interrupts = <0>; + interrupt-controller;This appears to be wrong. I'm working on a private tree of OpenSBI, where I validate all PLIC SYS/AON/STG CRG/SYSCON/IOMUX, and other devices... register reads/writes. Looks like this `interrupts = <0>` will cause the kernel code (my vanilla 6.6 tree) to enable interrupt 0 on PLIC, which is wrong. Of course, you won't see this problem if you run upstream OpenSBI, where all writes to PLIC are permitted. I assume PLIC will ignore this request to enable irq 0. Still, this is wrong. Can someone fromStarfive take this issue? Attaching the backtrace here: # This line is from my OpenSBI jh7110_virt_plic_write: U7 refusing to enable interrupt 0 # After this, I'll inject a memory access (write) fault to S mode # Below is from Linux Oops - store (or AMO) access fault [#1] Modules linked in: CPU: 0 PID: 62 Comm: kworker/u9:2 Not tainted 6.6.0-gc3eb9993b167 #14 Hardware name: StarFive VisionFive 2 v1.3B (DT) Workqueue: events_unbound deferred_probe_work_func epc : plic_irq_enable+0xd2/0x15e ra : plic_irq_enable+0xa8/0x15e epc : ffffffff804650bc ra : ffffffff80465092 sp : ffffffc8003f34c0 gp : ffffffff816d2290 tp : ffffffd802411f80 t0 : ffffffc8003f3010 t1 : 0000000000000001 t2 : 0000000000000003 s0 : ffffffc8003f3530 s1 : ffffffd801eaee30 a0 : ffffffd8bff835b0 a1 : 000000000000001e a2 : 0000000000000004 a3 : ffffffd801eaee00 a4 : 000000000000001e a5 : ffffffc804002100 a6 : 0000000000000000 a7 : 00000000000007ad s2 : ffffffff80ede5a0 s3 : 0000000000000001 s4 : 000000000000ffff s5 : 00000000ffffffff s6 : 0000000000000000 s7 : 000000000000001f s8 : ffffffff81707af0 s9 : ffffffff80eda688 s10: ffffffd801eaee00 s11: ffffffd8bff835a0 t3 : ffffffff816d3420 t4 : 0000000000000002 t5 : 0000000000000000 t6 : 0000000000000000 status: 0000000200000100 badaddr: ffffffc804002100 cause: 0000000000000007 [<ffffffff804650bc>] plic_irq_enable+0xd2/0x15e [<ffffffff800649e6>] irq_enable+0x2c/0x64 [<ffffffff80064a76>] __irq_startup+0x58/0x60 [<ffffffff80064ada>] irq_startup+0x5c/0x14e [<ffffffff800621f4>] __setup_irq+0x582/0x644 [<ffffffff80062368>] request_threaded_irq+0xb2/0x154 [<ffffffff8055571a>] regmap_add_irq_chip_fwnode+0x6fe/0x8f2 [<ffffffff80555944>] regmap_add_irq_chip+0x36/0x4a [<ffffffff8055cb1e>] axp20x_device_probe+0x36/0x114 [<ffffffff8055cce6>] axp20x_i2c_probe+0x6c/0xa0 [<ffffffff8063a8f0>] i2c_device_probe+0x11c/0x23e [<ffffffff80533464>] really_probe+0x86/0x23e [<ffffffff80533678>] __driver_probe_device+0x5c/0xda [<ffffffff80533722>] driver_probe_device+0x2c/0xf8 [<ffffffff8053385c>] __device_attach_driver+0x6e/0xd0 [<ffffffff80531a2c>] bus_for_each_drv+0x5a/0x9a [<ffffffff80533ba0>] __device_attach+0x78/0x116 [<ffffffff80533db6>] device_initial_probe+0xe/0x16 [<ffffffff80532722>] bus_probe_device+0x86/0x88 [<ffffffff8053034a>] device_add+0x3b2/0x552 [<ffffffff80530500>] device_register+0x16/0x20 [<ffffffff8063bb54>] i2c_new_client_device+0x14e/0x214 [<ffffffff8063d9ae>] of_i2c_register_devices+0xa2/0xf8 [<ffffffff8063c246>] i2c_register_adapter+0x130/0x32e [<ffffffff8063c49e>] __i2c_add_numbered_adapter+0x5a/0x86 [<ffffffff8063c55a>] i2c_add_adapter+0x90/0xb4 [<ffffffff8063c62e>] i2c_add_numbered_adapter+0x22/0x2a [<ffffffff8063fd34>] i2c_dw_probe_master+0x288/0x304 [<ffffffff806409c4>] dw_i2c_plat_probe+0x288/0x37e [<ffffffff80535946>] platform_probe+0x4e/0xa6 [<ffffffff80533464>] really_probe+0x86/0x23e [<ffffffff80533678>] __driver_probe_device+0x5c/0xda [<ffffffff80533722>] driver_probe_device+0x2c/0xf8 [<ffffffff8053385c>] __device_attach_driver+0x6e/0xd0 [<ffffffff80531a2c>] bus_for_each_drv+0x5a/0x9a [<ffffffff80533ba0>] __device_attach+0x78/0x116 [<ffffffff80533db6>] device_initial_probe+0xe/0x16 [<ffffffff80532722>] bus_probe_device+0x86/0x88 [<ffffffff80532b86>] deferred_probe_work_func+0x70/0xa6 [<ffffffff800238c2>] process_one_work+0x14a/0x23a [<ffffffff80024760>] worker_thread+0x314/0x450 [<ffffffff8002be5a>] kthread+0x9a/0xae [<ffffffff8000248a>] ret_from_fork+0xa/0x1c Code: 97ba 000f 0140 4398 000f 08a0 9bbb 0179 ebb3 00eb (a023) 0177 ---[ end trace 0000000000000000 ]---+ #interrupt-cells = <1>; + + regulators { + vdd_cpu: dcdc2 { + regulator-always-on; + regulator-min-microvolt = <500000>; + regulator-max-microvolt = <1540000>; + regulator-name = "vdd-cpu"; + }; + }; + }; }; &i2c6 {Bo
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