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Date: Fri, 13 Jan 2023 12:26:47 +0100
From: Martin Botka <martin.botka@...ainline.org>
To: Andre Przywara <andre.przywara@....com>
CC: martin.botka1@...il.com,
Konrad Dybcio <konrad.dybcio@...ainline.org>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@...ainline.org>,
Marijn Suijten <marijn.suijten@...ainline.org>,
Jami Kettunen <jamipkettunen@...ainline.org>,
Paul Bouchara <paul.bouchara@...ainline.org>,
Jan Trmal <jtrmal@...il.com>, Lee Jones <lee@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Chen-Yu Tsai <wens@...e.org>,
Liam Girdwood <lgirdwood@...il.com>,
Mark Brown <broonie@...nel.org>, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 2/3] mfd: ax20x: Add suppport for AXP1530 PMIC
On January 13, 2023 1:35:55 AM GMT+01:00, Andre Przywara <andre.przywara@....com> wrote:
>On Tue, 10 Jan 2023 01:32:58 +0100
>Martin Botka <martin.botka@...ainline.org> wrote:
>
>Hi Martin,
>
>> On Tue, Jan 10 2023 at 12:00:25 AM +00:00:00, Andre Przywara
>> <andre.przywara@....com> wrote:
>> > On Sat, 17 Dec 2022 01:13:01 +0100
>> > Martin Botka <martin.botka@...ainline.org> wrote:
>> >
>> > Hi Martin,
>> Hello Andre,
>> >
>> > hope you had a good break! Did you have any chance to come back to
>> > this
>> > again? Now would be a good time to send a new version, otherwise it's
>> > getting pretty tight for v6.3 already.
>> >
>> I did have a good break :)
>> I unfortunately did not. Was bit busy with issues to one of my projects.
>> Will see if I can sort this out tomorrow but you said you already have
>> AXP313A driver
>> ready. So it may be better if you send your driver.
>
>Well, so my patch just compiled, and it wasn't as complete as yours.
>Also I have no means of testing it. Also you were first with the patch,
>so deserve the credits.
>
>Since you seem to be busy in the next days, I could offer to address
>the comments myself (since you acked them), and send a v6 on
>your behalf. I would need to rely on you for testing, maybe Junari
>(from #linux-sunxi) could also help out here.
That is very kind of you. But please add yourself as co-author or something like that so your contribution isn't without credit.
As for testing I can after 21:30UTC+1. I should be on IRC after that hopefully.
Cheers,
Martin
>
>> > On Friday, "junari" in the #linux-sunxi IRC channel, made some
>> > interesting discovery: he is playing around with an AXP313a on some
>> > H616 device and figured that DCDC3 is not behaving like the datasheet:
>> > https://oftc.irclog.whitequark.org/linux-sunxi/2023-01-06#31784528;
>> > He later confirmed the voltage:
>> > https://oftc.irclog.whitequark.org/linux-sunxi/2023-01-08#31788373;
>> >
>> Ah interesting. What i also found out right after signing off is from a
>> friend at BIQU
>> that the AXP1530 is the AXP313A. It is the same chip. The only
>> difference being that AXP1530
>> is the internal naming AXP uses. I mean we kinda figured that one out
>> but its nice to have
>> confirmation on this :)
>
>Indeed, thanks for that. Aside from the BSP driver, there doesn't seem
>to be many records of the AXP1530, so I would go with the AXP313a name,
>and leave the AXP1530 for the trivia section.
>
>Cheers,
>Andre
>
>
>> > Basically it looks like the DCDC3 parameters you harvested from the
>> > BSP
>> > code seem to be correct after all. Do you have any chance to measure
>> > the voltage?
>> I wish i had. Dont think my multimeter would be able to be so precise.
>> Will try to source some oscilloscope but that wont be in time
>> unfortunately.
>> > If not, can we try to deduce what the right settings are? The voltage
>> > difference seems to be significant (860mV vs 1200mV), I wonder if any
>> > device connected there (DRAM?) would work with the wrong setting?
>> I will try to be around in IRC sunxi channel "today" from around
>> 13:00UTC+1.
>> Would be prob best to discuss this there and then share our findings
>> here on LKML :)
>>
>> Cheers,
>> Martin
>> >
>> > Cheers,
>> > Andre
>> >
>> >> On December 16, 2022 7:17:52 PM GMT+01:00, Andre Przywara
>> >> <andre.przywara@....com> wrote:
>> >> >On Wed, 14 Dec 2022 20:03:04 +0100
>> >> >Martin Botka <martin.botka@...ainline.org> wrote:
>> >> >
>> >> >Hi Martin,
>> >> >
>> >> >> AXP1530 is a PMIC chip produced by X-Powers and an be connected
>> >> via
>> >> >> I2C bus.
>> >> >> Where AXP313A seems to be closely related so the same driver can
>> >> be used and
>> >> >> seen it only paired with H616 SoC.
>> >> >
>> >> >So as mentioned, I am pretending this is for the AXP313A now,
>> >> looking at
>> >> >its datasheet.
>> >> >Of course the elephant in the room is s/AXP1530/AXP313A/, but
>> >> other than
>> >> >that:
>> >> >
>> >> >>
>> >> >> Signed-off-by: Martin Botka <martin.botka@...ainline.org>
>> >> >> ---
>> >> >> drivers/mfd/axp20x-i2c.c | 2 ++
>> >> >> drivers/mfd/axp20x.c | 62
>> >> ++++++++++++++++++++++++++++++++++++++
>> >> >> include/linux/mfd/axp20x.h | 32 ++++++++++++++++++++
>> >> >> 3 files changed, 96 insertions(+)
>> >> >>
>> >> >> diff --git a/drivers/mfd/axp20x-i2c.c b/drivers/mfd/axp20x-i2c.c
>> >> >> index 8fd6727dc30a..6bfb931a580e 100644
>> >> >> --- a/drivers/mfd/axp20x-i2c.c
>> >> >> +++ b/drivers/mfd/axp20x-i2c.c
>> >> >> @@ -60,6 +60,7 @@ static void axp20x_i2c_remove(struct
>> >> i2c_client *i2c)
>> >> >> #ifdef CONFIG_OF
>> >> >> static const struct of_device_id axp20x_i2c_of_match[] = {
>> >> >> { .compatible = "x-powers,axp152", .data = (void *)AXP152_ID },
>> >> >> + { .compatible = "x-powers,axp1530", .data = (void
>> >> *)AXP1530_ID},
>> >> >> { .compatible = "x-powers,axp202", .data = (void *)AXP202_ID },
>> >> >> { .compatible = "x-powers,axp209", .data = (void *)AXP209_ID },
>> >> >> { .compatible = "x-powers,axp221", .data = (void *)AXP221_ID },
>> >> >> @@ -73,6 +74,7 @@ MODULE_DEVICE_TABLE(of, axp20x_i2c_of_match);
>> >> >>
>> >> >> static const struct i2c_device_id axp20x_i2c_id[] = {
>> >> >> { "axp152", 0 },
>> >> >> + { "axp1530", 0 },
>> >> >> { "axp202", 0 },
>> >> >> { "axp209", 0 },
>> >> >> { "axp221", 0 },
>> >> >> diff --git a/drivers/mfd/axp20x.c b/drivers/mfd/axp20x.c
>> >> >> index 880c41fa7021..6caa7e87ad80 100644
>> >> >> --- a/drivers/mfd/axp20x.c
>> >> >> +++ b/drivers/mfd/axp20x.c
>> >> >> @@ -34,6 +34,7 @@
>> >> >>
>> >> >> static const char * const axp20x_model_names[] = {
>> >> >> "AXP152",
>> >> >> + "AXP1530",
>> >> >> "AXP202",
>> >> >> "AXP209",
>> >> >> "AXP221",
>> >> >> @@ -66,6 +67,24 @@ static const struct regmap_access_table
>> >> axp152_volatile_table = {
>> >> >> .n_yes_ranges = ARRAY_SIZE(axp152_volatile_ranges),
>> >> >> };
>> >> >>
>> >> >> +static const struct regmap_range axp1530_writeable_ranges[] = {
>> >> >> + regmap_reg_range(AXP1530_ON_INDICATE, AXP1530_FREQUENCY),
>> >> >
>> >> >Where does this FREQUENCY register come from? BSP source? Is that
>> >> the
>> >> >lost register to set the PWM frequency?
>> >> >The 313 datasheet doesn't mention it, and since we deny
>> >> programming the
>> >> >frequency, I would just leave it out.
>> >> >If people find it existing (and useful!) later on, we should be
>> >> able to
>> >> >add it without breaking anything.
>> >>
>> >> BSP. Ack.
>> >> >
>> >> >> +};
>> >> >> +
>> >> >> +static const struct regmap_range axp1530_volatile_ranges[] = {
>> >> >> + regmap_reg_range(AXP1530_ON_INDICATE, AXP1530_FREQUENCY),
>> >> >> +};
>> >> >> +
>> >> >> +static const struct regmap_access_table axp1530_writeable_table
>> >> = {
>> >> >> + .yes_ranges = axp1530_writeable_ranges,
>> >> >> + .n_yes_ranges = ARRAY_SIZE(axp1530_writeable_ranges),
>> >> >> +};
>> >> >> +
>> >> >> +static const struct regmap_access_table axp1530_volatile_table
>> >> = {
>> >> >> + .yes_ranges = axp1530_volatile_ranges,
>> >> >> + .n_yes_ranges = ARRAY_SIZE(axp1530_volatile_ranges),
>> >> >> +};
>> >> >> +
>> >> >> static const struct regmap_range axp20x_writeable_ranges[] = {
>> >> >> regmap_reg_range(AXP20X_DATACACHE(0), AXP20X_IRQ5_STATE),
>> >> >> regmap_reg_range(AXP20X_CHRG_CTRL1, AXP20X_CHRG_CTRL2),
>> >> >> @@ -245,6 +264,15 @@ static const struct regmap_config
>> >> axp152_regmap_config = {
>> >> >> .cache_type = REGCACHE_RBTREE,
>> >> >> };
>> >> >>
>> >> >> +static const struct regmap_config axp1530_regmap_config = {
>> >> >> + .reg_bits = 8,
>> >> >> + .val_bits = 8,
>> >> >> + .wr_table = &axp1530_writeable_table,
>> >> >> + .volatile_table = &axp1530_volatile_table,
>> >> >> + .max_register = AXP1530_FREQUENCY,
>> >> >> + .cache_type = REGCACHE_RBTREE,
>> >> >> +};
>> >> >> +
>> >> >> static const struct regmap_config axp20x_regmap_config = {
>> >> >> .reg_bits = 8,
>> >> >> .val_bits = 8,
>> >> >> @@ -304,6 +332,16 @@ static const struct regmap_irq
>> >> axp152_regmap_irqs[] = {
>> >> >> INIT_REGMAP_IRQ(AXP152, GPIO0_INPUT, 2, 0),
>> >> >> };
>> >> >>
>> >> >> +static const struct regmap_irq axp1530_regmap_irqs[] = {
>> >> >> + INIT_REGMAP_IRQ(AXP1530, KEY_L2H_EN, 0, 7),
>> >> >> + INIT_REGMAP_IRQ(AXP1530, KEY_H2L_EN, 0, 6),
>> >> >> + INIT_REGMAP_IRQ(AXP1530, POKSIRQ_EN, 0, 5),
>> >> >> + INIT_REGMAP_IRQ(AXP1530, POKLIRQ_EN, 0, 4),
>> >> >
>> >> >Are those identifiers from the BSP source? The (translated) manual
>> >> gives
>> >> >some explanation, namely:
>> >> > PWRON key rising edge
>> >> > PWRON key falling edge
>> >> > Short press the PWRON button
>> >> > Long press the PWRON button
>> >> >
>> >> >So I'd suggest we follow the existing naming:
>> >> > PEK_RIS_EDGE, PEK_FAL_EDGE, PEK_SHORT, PEK_LONG (respectively)
>> >> >
>> >> >Or come up with names that people could actually decipher ;-)
>> >> >
>> >> >
>> >> Ack.
>> >> >> + INIT_REGMAP_IRQ(AXP1530, DCDC3_UNDER, 0, 3),
>> >> >> + INIT_REGMAP_IRQ(AXP1530, DCDC2_UNDER, 0, 2),
>> >> >> + INIT_REGMAP_IRQ(AXP1530, TEMP_OVER, 0, 0),
>> >> >> +};
>> >> >> +
>> >> >> static const struct regmap_irq axp20x_regmap_irqs[] = {
>> >> >> INIT_REGMAP_IRQ(AXP20X, ACIN_OVER_V, 0, 7),
>> >> >> INIT_REGMAP_IRQ(AXP20X, ACIN_PLUGIN, 0, 6),
>> >> >> @@ -514,6 +552,18 @@ static const struct regmap_irq_chip
>> >> axp152_regmap_irq_chip = {
>> >> >> .num_regs = 3,
>> >> >> };
>> >> >>
>> >> >> +static const struct regmap_irq_chip axp1530_regmap_irq_chip = {
>> >> >> + .name = "axp1530_irq_chip",
>> >> >> + .status_base = AXP1530_IRQ_STATUS1,
>> >> >> + .ack_base = AXP1530_IRQ_STATUS1,
>> >> >> + .mask_base = AXP1530_IRQ_ENABLE1,
>> >> >> + .mask_invert = true,
>> >> >> + .init_ack_masked = true,
>> >> >> + .irqs = axp1530_regmap_irqs,
>> >> >> + .num_irqs = ARRAY_SIZE(axp1530_regmap_irqs),
>> >> >> + .num_regs = 1,
>> >> >> +};
>> >> >> +
>> >> >> static const struct regmap_irq_chip axp20x_regmap_irq_chip = {
>> >> >> .name = "axp20x_irq_chip",
>> >> >> .status_base = AXP20X_IRQ1_STATE,
>> >> >> @@ -683,6 +733,12 @@ static const struct mfd_cell axp152_cells[]
>> >> = {
>> >> >> },
>> >> >> };
>> >> >>
>> >> >> +static struct mfd_cell axp1530_cells[] = {
>> >> >> + {
>> >> >> + .name = "axp20x-regulator",
>> >> >> + },
>> >> >> +};
>> >> >> +
>> >> >> static const struct resource axp288_adc_resources[] = {
>> >> >> DEFINE_RES_IRQ_NAMED(AXP288_IRQ_GPADC, "GPADC"),
>> >> >> };
>> >> >> @@ -874,6 +930,12 @@ int axp20x_match_device(struct axp20x_dev
>> >> *axp20x)
>> >> >> axp20x->regmap_cfg = &axp152_regmap_config;
>> >> >> axp20x->regmap_irq_chip = &axp152_regmap_irq_chip;
>> >> >> break;
>> >> >> + case AXP1530_ID:
>> >> >> + axp20x->nr_cells = ARRAY_SIZE(axp1530_cells);
>> >> >> + axp20x->cells = axp1530_cells;
>> >> >> + axp20x->regmap_cfg = &axp1530_regmap_config;
>> >> >> + axp20x->regmap_irq_chip = &axp1530_regmap_irq_chip;
>> >> >> + break;
>> >> >> case AXP202_ID:
>> >> >> case AXP209_ID:
>> >> >> axp20x->nr_cells = ARRAY_SIZE(axp20x_cells);
>> >> >> diff --git a/include/linux/mfd/axp20x.h
>> >> b/include/linux/mfd/axp20x.h
>> >> >> index 9ab0e2fca7ea..cad25754500f 100644
>> >> >> --- a/include/linux/mfd/axp20x.h
>> >> >> +++ b/include/linux/mfd/axp20x.h
>> >> >> @@ -12,6 +12,7 @@
>> >> >>
>> >> >> enum axp20x_variants {
>> >> >> AXP152_ID = 0,
>> >> >> + AXP1530_ID,
>> >> >> AXP202_ID,
>> >> >> AXP209_ID,
>> >> >> AXP221_ID,
>> >> >> @@ -45,6 +46,18 @@ enum axp20x_variants {
>> >> >> #define AXP152_DCDC_FREQ 0x37
>> >> >> #define AXP152_DCDC_MODE 0x80
>> >> >>
>> >> >> +#define AXP1530_ON_INDICATE 0x00
>> >> >> +#define AXP1530_OUTPUT_CONTROL 0x10
>> >> >> +#define AXP1530_DCDC1_CONRTOL 0x13
>> >> >> +#define AXP1530_DCDC2_CONRTOL 0x14
>> >> >> +#define AXP1530_DCDC3_CONRTOL 0x15
>> >> >> +#define AXP1530_ALDO1_CONRTOL 0x16
>> >> >> +#define AXP1530_DLDO1_CONRTOL 0x17
>> >> >> +#define AXP1530_OUTOUT_MONITOR 0x1D
>> >> >
>> >> >Shall this read AXP1530_OUTPUT_MONITOR?
>> >> >
>> >> >> +#define AXP1530_IRQ_ENABLE1 0x20
>> >> >> +#define AXP1530_IRQ_STATUS1 0x21
>> >> >
>> >> >There is only one interrupt register, so can we drop the trailing
>> >> number?
>> >> >
>> >> Yep.
>> >> >> +#define AXP1530_FREQUENCY 0x87
>> >> >
>> >> >As mentioned, the manual does not mention it, and we don't use it
>> >> anyway.
>> >> >
>> >> Ack.
>> >> >> +
>> >> >> #define AXP20X_PWR_INPUT_STATUS 0x00
>> >> >> #define AXP20X_PWR_OP_MODE 0x01
>> >> >> #define AXP20X_USB_OTG_STATUS 0x02
>> >> >> @@ -287,6 +300,15 @@ enum axp20x_variants {
>> >> >> #define AXP288_FG_TUNE5 0xed
>> >> >>
>> >> >> /* Regulators IDs */
>> >> >> +enum {
>> >> >> + AXP1530_DCDC1 = 0,
>> >> >> + AXP1530_DCDC2,
>> >> >> + AXP1530_DCDC3,
>> >> >> + AXP1530_LDO1,
>> >> >> + AXP1530_LDO2,
>> >> >
>> >> >I guess we should add the RTC LDO as LDO3 here.
>> >> >
>> >> >The rest of the numbers match with the datasheet.
>> >> >
>> >> Ack.
>> >>
>> >> I will take some time off due to Uni so v6 will be delayed peobably
>> >> last holidays.
>> >>
>> >> Best regards and happy holidays,
>> >> Martin
>> >> >Cheers,
>> >> >Andre
>> >> >
>> >> >> + AXP1530_REG_ID_MAX,
>> >> >> +};
>> >> >> +
>> >> >> enum {
>> >> >> AXP20X_LDO1 = 0,
>> >> >> AXP20X_LDO2,
>> >> >> @@ -440,6 +462,16 @@ enum {
>> >> >> AXP152_IRQ_GPIO0_INPUT,
>> >> >> };
>> >> >>
>> >> >> +enum axp1530_irqs {
>> >> >> + AXP1530_IRQ_TEMP_OVER,
>> >> >> + AXP1530_IRQ_DCDC2_UNDER = 2,
>> >> >> + AXP1530_IRQ_DCDC3_UNDER,
>> >> >> + AXP1530_IRQ_POKLIRQ_EN,
>> >> >> + AXP1530_IRQ_POKSIRQ_EN,
>> >> >> + AXP1530_IRQ_KEY_L2H_EN,
>> >> >> + AXP1530_IRQ_KEY_H2L_EN,
>> >> >> +};
>> >> >> +
>> >> >> enum {
>> >> >> AXP20X_IRQ_ACIN_OVER_V = 1,
>> >> >> AXP20X_IRQ_ACIN_PLUGIN,
>> >> >
>> >
>>
>>
>
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