[PATCH 4/5] i2c: MPC837xRDB Power Management and GPIO expander driver
Anton Vorontsov
avorontsov at ru.mvista.com
Fri Mar 28 04:10:43 EST 2008
On Thu, Mar 27, 2008 at 01:56:11AM +0300, Anton Vorontsov wrote:
> On Wed, Mar 26, 2008 at 03:56:37PM -0500, Timur Tabi wrote:
> > Anton Vorontsov wrote:
> >
> > > +config MCU_MPC837XRDB
> > > + tristate "MPC837XRDB MCU driver"
> > > + depends on I2C && MPC837x_RDB && OF_GPIO
> >
> > The MPC8349E-mITX also has this chip. Can you include support for that board as
> > well?
>
> Well, only if it has the same (or compatible) firmware.. then yes.
Ok, they're the same and everything works fine. Except one mitx-specific
thing though... on the power-off call I can see that MCU is driving its
PTA1 pin low as expected, but the board doesn't turn off. PTA1 pin is
wired to the J19 jumper pin1, pin2 is PORESET# and pin3 is RESET#.
It doesn't work in both [1-2] and [2-3] positions...
This is surely not a software issue though. And just in case, on the
board I have the PWR button isn't functional, so this is hw issues (or
just need to find another jumper somewhere ;-).
Updated patch follows.
- - - -
From: Anton Vorontsov <avorontsov at ru.mvista.com>
Subject: [POWERPC] mpc8349emitx/mpc837xrdb: add support for MCU
MCU is an external Freescale MC9S08QG8 microcontroller, mainly used to
provide soft power-off function, but also exports two GPIOs (wired to
the LEDs, but also available from the external headers).
Signed-off-by: Anton Vorontsov <avorontsov at ru.mvista.com>
---
arch/powerpc/boot/dts/mpc8349emitx.dts | 39 ++++++++++++++++++++++++++++-
arch/powerpc/boot/dts/mpc8377_rdb.dts | 29 ++++++++++++++++++++-
arch/powerpc/boot/dts/mpc8378_rdb.dts | 29 ++++++++++++++++++++-
arch/powerpc/boot/dts/mpc8379_rdb.dts | 29 ++++++++++++++++++++-
arch/powerpc/platforms/83xx/mpc834x_itx.c | 1 +
arch/powerpc/platforms/83xx/mpc837x_rdb.c | 1 +
arch/powerpc/sysdev/fsl_soc.c | 1 +
7 files changed, 125 insertions(+), 4 deletions(-)
diff --git a/arch/powerpc/boot/dts/mpc8349emitx.dts b/arch/powerpc/boot/dts/mpc8349emitx.dts
index 9426676..0ad85af 100644
--- a/arch/powerpc/boot/dts/mpc8349emitx.dts
+++ b/arch/powerpc/boot/dts/mpc8349emitx.dts
@@ -51,6 +51,8 @@
soc8349 at e0000000 {
#address-cells = <1>;
#size-cells = <1>;
+ compatible = "fsl,immr-mpc8349e", "fsl,immr", "fsl,soc",
+ "simple-bus";
device_type = "soc";
ranges = <0x0 0xe0000000 0x00100000>;
reg = <0xe0000000 0x00000200>;
@@ -66,11 +68,46 @@
#address-cells = <1>;
#size-cells = <0>;
cell-index = <0>;
- compatible = "fsl-i2c";
+ compatible = "fsl-i2c", "simple-bus";
reg = <0x3000 0x100>;
interrupts = <14 0x8>;
interrupt-parent = <&ipic>;
dfsrr;
+
+ rtc at 68 {
+ device_type = "rtc";
+ compatible = "dallas,ds1339";
+ reg = <0x68>;
+ };
+
+ mcu_pio: mcu at 0a {
+ #address-cells = <0>;
+ #size-cells = <0>;
+ #gpio-cells = <1>;
+ compatible = "fsl,mc9s08qg8-mpc8349emitx",
+ "fsl,mcu-mpc8349emitx",
+ "simple-bus";
+ reg = <0x0a>;
+ gpio-controller;
+
+ led at 0 {
+ compatible = "fsl,mcu-mpc8349emitx-led2",
+ "gpio-led";
+ linux,name = "pwr";
+ linux,brightness = <1>;
+ linux,active-low;
+ gpios = <&mcu_pio 0>;
+ };
+
+ led at 1 {
+ compatible = "fsl,mcu-mpc8349emitx-led1",
+ "gpio-led";
+ linux,name = "hdd";
+ linux,default-trigger = "ide-disk";
+ linux,active-low;
+ gpios = <&mcu_pio 1>;
+ };
+ };
};
i2c at 3100 {
diff --git a/arch/powerpc/boot/dts/mpc8377_rdb.dts b/arch/powerpc/boot/dts/mpc8377_rdb.dts
index 440aa4d..20d7e29 100644
--- a/arch/powerpc/boot/dts/mpc8377_rdb.dts
+++ b/arch/powerpc/boot/dts/mpc8377_rdb.dts
@@ -111,7 +111,7 @@
#address-cells = <1>;
#size-cells = <0>;
cell-index = <0>;
- compatible = "fsl-i2c";
+ compatible = "fsl-i2c", "simple-bus";
reg = <0x3000 0x100>;
interrupts = <14 0x8>;
interrupt-parent = <&ipic>;
@@ -121,6 +121,33 @@
compatible = "dallas,ds1339";
reg = <0x68>;
};
+ mcu_pio: mcu at 0a {
+ #address-cells = <0>;
+ #size-cells = <0>;
+ #gpio-cells = <1>;
+ compatible = "fsl,mc9s08qg8-mpc837xrdb",
+ "fsl,mcu-mpc837xrdb",
+ "fsl,mcu-mpc8349emitx",
+ "simple-bus";
+ reg = <0x0a>;
+ gpio-controller;
+
+ led at 0 {
+ compatible = "fsl,mcu-mpc837xrdb-led2",
+ "gpio-led";
+ linux,name = "mcu2";
+ linux,active-low;
+ gpios = <&mcu_pio 0>;
+ };
+
+ led at 1 {
+ compatible = "fsl,mcu-mpc837xrdb-led1",
+ "gpio-led";
+ linux,name = "mcu1";
+ linux,active-low;
+ gpios = <&mcu_pio 1>;
+ };
+ };
};
i2c at 3100 {
diff --git a/arch/powerpc/boot/dts/mpc8378_rdb.dts b/arch/powerpc/boot/dts/mpc8378_rdb.dts
index 9271153..fdd2e9b 100644
--- a/arch/powerpc/boot/dts/mpc8378_rdb.dts
+++ b/arch/powerpc/boot/dts/mpc8378_rdb.dts
@@ -111,7 +111,7 @@
#address-cells = <1>;
#size-cells = <0>;
cell-index = <0>;
- compatible = "fsl-i2c";
+ compatible = "fsl-i2c", "simple-bus";
reg = <0x3000 0x100>;
interrupts = <14 0x8>;
interrupt-parent = <&ipic>;
@@ -121,6 +121,33 @@
compatible = "dallas,ds1339";
reg = <0x68>;
};
+ mcu_pio: mcu at 0a {
+ #address-cells = <0>;
+ #size-cells = <0>;
+ #gpio-cells = <1>;
+ compatible = "fsl,mc9s08qg8-mpc837xrdb",
+ "fsl,mcu-mpc837xrdb",
+ "fsl,mcu-mpc8349emitx",
+ "simple-bus";
+ reg = <0x0a>;
+ gpio-controller;
+
+ led at 0 {
+ compatible = "fsl,mcu-mpc837xrdb-led2",
+ "gpio-led";
+ linux,name = "mcu2";
+ linux,active-low;
+ gpios = <&mcu_pio 0>;
+ };
+
+ led at 1 {
+ compatible = "fsl,mcu-mpc837xrdb-led1",
+ "gpio-led";
+ linux,name = "mcu1";
+ linux,active-low;
+ gpios = <&mcu_pio 1>;
+ };
+ };
};
i2c at 3100 {
diff --git a/arch/powerpc/boot/dts/mpc8379_rdb.dts b/arch/powerpc/boot/dts/mpc8379_rdb.dts
index 0dda2fc..c7a0152 100644
--- a/arch/powerpc/boot/dts/mpc8379_rdb.dts
+++ b/arch/powerpc/boot/dts/mpc8379_rdb.dts
@@ -111,7 +111,7 @@
#address-cells = <1>;
#size-cells = <0>;
cell-index = <0>;
- compatible = "fsl-i2c";
+ compatible = "fsl-i2c", "simple-bus";
reg = <0x3000 0x100>;
interrupts = <14 0x8>;
interrupt-parent = <&ipic>;
@@ -121,6 +121,33 @@
compatible = "dallas,ds1339";
reg = <0x68>;
};
+ mcu_pio: mcu at 0a {
+ #address-cells = <0>;
+ #size-cells = <0>;
+ #gpio-cells = <1>;
+ compatible = "fsl,mc9s08qg8-mpc837xrdb",
+ "fsl,mcu-mpc837xrdb",
+ "fsl,mcu-mpc8349emitx",
+ "simple-bus";
+ reg = <0x0a>;
+ gpio-controller;
+
+ led at 0 {
+ compatible = "fsl,mcu-mpc837xrdb-led2",
+ "gpio-led";
+ linux,name = "mcu2";
+ linux,active-low;
+ gpios = <&mcu_pio 0>;
+ };
+
+ led at 1 {
+ compatible = "fsl,mcu-mpc837xrdb-led1",
+ "gpio-led";
+ linux,name = "mcu1";
+ linux,active-low;
+ gpios = <&mcu_pio 1>;
+ };
+ };
};
i2c at 3100 {
diff --git a/arch/powerpc/platforms/83xx/mpc834x_itx.c b/arch/powerpc/platforms/83xx/mpc834x_itx.c
index 50e8f63..1b3451c 100644
--- a/arch/powerpc/platforms/83xx/mpc834x_itx.c
+++ b/arch/powerpc/platforms/83xx/mpc834x_itx.c
@@ -40,6 +40,7 @@
static struct of_device_id __initdata mpc834x_itx_ids[] = {
{ .compatible = "fsl,pq2pro-localbus", },
+ { .compatible = "simple-bus", },
{},
};
diff --git a/arch/powerpc/platforms/83xx/mpc837x_rdb.c b/arch/powerpc/platforms/83xx/mpc837x_rdb.c
index 2293ae5..c00356b 100644
--- a/arch/powerpc/platforms/83xx/mpc837x_rdb.c
+++ b/arch/powerpc/platforms/83xx/mpc837x_rdb.c
@@ -46,6 +46,7 @@ static void __init mpc837x_rdb_setup_arch(void)
static struct of_device_id mpc837x_ids[] = {
{ .type = "soc", },
{ .compatible = "soc", },
+ { .compatible = "simple-bus", },
{},
};
diff --git a/arch/powerpc/sysdev/fsl_soc.c b/arch/powerpc/sysdev/fsl_soc.c
index 7ad9bce..e8fe369 100644
--- a/arch/powerpc/sysdev/fsl_soc.c
+++ b/arch/powerpc/sysdev/fsl_soc.c
@@ -410,6 +410,7 @@ static struct i2c_driver_device i2c_devices[] __initdata = {
{"dallas,ds1340", "rtc-ds1307", "ds1340",},
{"stm,m41t00", "rtc-ds1307", "m41t00"},
{"dallas,ds1374", "rtc-ds1374", "rtc-ds1374",},
+ {"fsl,mcu-mpc8349emitx", "mcu-mpc8349emitx", "mcu-mpc8349emitx"},
};
static int __init of_find_i2c_driver(struct device_node *node,
--
1.5.2.2
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