* [PATCH 1/2] ARM: rdu2: config PMIC SW1AB and SW1C rails to 1.375
@ 2018-09-17 16:36 Lucas Stach
2018-09-17 16:36 ` [PATCH 2/2] ARM: rdu2: configure the USB port as OTG Lucas Stach
2018-09-17 16:41 ` [PATCH 1/2] ARM: rdu2: config PMIC SW1AB and SW1C rails to 1.375 Lucas Stach
0 siblings, 2 replies; 3+ messages in thread
From: Lucas Stach @ 2018-09-17 16:36 UTC (permalink / raw)
To: barebox
This is the default out-of-reset voltage, but if only the i.MX6 SoC
got reset, the PMIC might still be stuck at the lower volatge for the
slow operating point.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
---
arch/arm/boards/zii-imx6q-rdu2/board.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/arch/arm/boards/zii-imx6q-rdu2/board.c b/arch/arm/boards/zii-imx6q-rdu2/board.c
index f6c908c9f16d..bce221bf8d20 100644
--- a/arch/arm/boards/zii-imx6q-rdu2/board.c
+++ b/arch/arm/boards/zii-imx6q-rdu2/board.c
@@ -137,10 +137,27 @@ late_initcall(rdu2_enable_front_panel_usb);
static int rdu2_devices_init(void)
{
+ struct i2c_client client;
+
if (!of_machine_is_compatible("zii,imx6q-zii-rdu2") &&
!of_machine_is_compatible("zii,imx6qp-zii-rdu2"))
return 0;
+ client.adapter = i2c_get_adapter(1);
+ if (client.adapter) {
+ u8 reg;
+
+ /*
+ * Reset PMIC SW1AB and SW1C rails to 1.375V. If an event
+ * caused only the i.MX6 SoC reset, the PMIC might still be
+ * stuck on the low voltage for the slow operating point.
+ */
+ client.addr = 0x08; /* PMIC i2c address */
+ reg = 0x2b; /* 1.375V, valid for both rails */
+ i2c_write_reg(&client, 0x20, ®, 1);
+ i2c_write_reg(&client, 0x2e, ®, 1);
+ }
+
barebox_set_hostname("rdu2");
imx6_bbu_internal_spi_i2c_register_handler("SPI", "/dev/m25p0.barebox",
--
2.19.0
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^ permalink raw reply [flat|nested] 3+ messages in thread* [PATCH 2/2] ARM: rdu2: configure the USB port as OTG
2018-09-17 16:36 [PATCH 1/2] ARM: rdu2: config PMIC SW1AB and SW1C rails to 1.375 Lucas Stach
@ 2018-09-17 16:36 ` Lucas Stach
2018-09-17 16:41 ` [PATCH 1/2] ARM: rdu2: config PMIC SW1AB and SW1C rails to 1.375 Lucas Stach
1 sibling, 0 replies; 3+ messages in thread
From: Lucas Stach @ 2018-09-17 16:36 UTC (permalink / raw)
To: barebox
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
---
arch/arm/dts/imx6qdl-zii-rdu2.dtsi | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/arm/dts/imx6qdl-zii-rdu2.dtsi b/arch/arm/dts/imx6qdl-zii-rdu2.dtsi
index a74fb47831a9..9b5931d7be8e 100644
--- a/arch/arm/dts/imx6qdl-zii-rdu2.dtsi
+++ b/arch/arm/dts/imx6qdl-zii-rdu2.dtsi
@@ -140,3 +140,7 @@
};
};
};
+
+&usbotg {
+ dr_mode = "otg";
+};
--
2.19.0
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^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [PATCH 1/2] ARM: rdu2: config PMIC SW1AB and SW1C rails to 1.375
2018-09-17 16:36 [PATCH 1/2] ARM: rdu2: config PMIC SW1AB and SW1C rails to 1.375 Lucas Stach
2018-09-17 16:36 ` [PATCH 2/2] ARM: rdu2: configure the USB port as OTG Lucas Stach
@ 2018-09-17 16:41 ` Lucas Stach
1 sibling, 0 replies; 3+ messages in thread
From: Lucas Stach @ 2018-09-17 16:41 UTC (permalink / raw)
To: barebox
Am Montag, den 17.09.2018, 18:36 +0200 schrieb Lucas Stach:
> This is the default out-of-reset voltage, but if only the i.MX6 SoC
> got reset, the PMIC might still be stuck at the lower volatge for the
> slow operating point.
>
Please ignore, this patch is incomplete and I have a few more that
might fit into this series, so will resend later.
Regards,
Lucas
> Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
> ---
> arch/arm/boards/zii-imx6q-rdu2/board.c | 17 +++++++++++++++++
> 1 file changed, 17 insertions(+)
>
> diff --git a/arch/arm/boards/zii-imx6q-rdu2/board.c b/arch/arm/boards/zii-imx6q-rdu2/board.c
> index f6c908c9f16d..bce221bf8d20 100644
> --- a/arch/arm/boards/zii-imx6q-rdu2/board.c
> +++ b/arch/arm/boards/zii-imx6q-rdu2/board.c
> @@ -137,10 +137,27 @@ late_initcall(rdu2_enable_front_panel_usb);
>
> static int rdu2_devices_init(void)
> {
> > + struct i2c_client client;
> +
> > if (!of_machine_is_compatible("zii,imx6q-zii-rdu2") &&
> > !of_machine_is_compatible("zii,imx6qp-zii-rdu2"))
> > return 0;
>
> > + client.adapter = i2c_get_adapter(1);
> > + if (client.adapter) {
> > + u8 reg;
> +
> > + /*
> > + * Reset PMIC SW1AB and SW1C rails to 1.375V. If an event
> > + * caused only the i.MX6 SoC reset, the PMIC might still be
> > + * stuck on the low voltage for the slow operating point.
> > + */
> > + client.addr = 0x08; /* PMIC i2c address */
> > + reg = 0x2b; /* 1.375V, valid for both rails */
> > + i2c_write_reg(&client, 0x20, ®, 1);
> > + i2c_write_reg(&client, 0x2e, ®, 1);
> > + }
> +
> > barebox_set_hostname("rdu2");
>
> > imx6_bbu_internal_spi_i2c_register_handler("SPI", "/dev/m25p0.barebox",
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^ permalink raw reply [flat|nested] 3+ messages in thread
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2018-09-17 16:36 [PATCH 1/2] ARM: rdu2: config PMIC SW1AB and SW1C rails to 1.375 Lucas Stach
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