powerpc/83xx: add mmc-spi support via the device tree for MPC8323E-RDB

- Add gpio-controller node to manage QE GPIO Bank D;
- Add mmc-spi node;
- Modify board file so that it won't use legacy SPI support with the new
  device trees.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Cc: David Brownell <david-b@pacbell.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Kumar Gala <galak@gate.crashing.org>
Cc: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2 files changed, 30 insertions, 0 deletions

diff --git a/arch/powerpc/boot/dts/mpc832x_rdb.dts b/arch/powerpc/boot/dts/mpc832x_rdb.dts
index dea30910c136..4319bd70a580 100644
--- a/arch/powerpc/boot/dts/mpc832x_rdb.dts
+++ b/arch/powerpc/boot/dts/mpc832x_rdb.dts
@@ -152,10 +152,21 @@
                 };
 
                 par_io@1400 {
+                        #address-cells = <1>;
+                        #size-cells = <1>;
                         reg = <0x1400 0x100>;
+                        ranges = <3 0x1448 0x18>;
+                        compatible = "fsl,mpc8323-qe-pario";
                         device_type = "par_io";
                         num-ports = <7>;
 
+                        qe_pio_d: gpio-controller@1448 {
+                                #gpio-cells = <2>;
+                                compatible = "fsl,mpc8323-qe-pario-bank";
+                                reg = <3 0x18>;
+                                gpio-controller;
+                        };
+
                         ucc2pio:ucc_pin@02 {
                                 pio-map = <
                         /* port  pin  dir  open_drain  assignment  has_irq */
@@ -225,12 +236,25 @@
                 };
 
                 spi@4c0 {
+                        #address-cells = <1>;
+                        #size-cells = <0>;
                         cell-index = <0>;
                         compatible = "fsl,spi";
                         reg = <0x4c0 0x40>;
                         interrupts = <2>;
                         interrupt-parent = <&qeic>;
+                        gpios = <&qe_pio_d 13 0>;
                         mode = "cpu-qe";
+
+                        mmc-slot@0 {
+                                compatible = "fsl,mpc8323rdb-mmc-slot",
+                                             "mmc-spi-slot";
+                                reg = <0>;
+                                gpios = <&qe_pio_d 14 1
+                                         &qe_pio_d 15 0>;
+                                voltage-ranges = <3300 3300>;
+                                spi-max-frequency = <50000000>;
+                        };
                 };
 
                 spi@500 {
diff --git a/arch/powerpc/platforms/83xx/mpc832x_rdb.c b/arch/powerpc/platforms/83xx/mpc832x_rdb.c
index 28e23cde64a1..e1e7eeb7d3a3 100644
--- a/arch/powerpc/platforms/83xx/mpc832x_rdb.c
+++ b/arch/powerpc/platforms/83xx/mpc832x_rdb.c
@@ -68,6 +68,12 @@ static int __init mpc832x_spi_init(void)
         par_io_config_pin(3, 14, 2, 0, 0, 0); /* SD_INSERT, I */
         par_io_config_pin(3, 15, 2, 0, 0, 0); /* SD_PROTECT,I */
 
+        /*
+         * Don't bother with legacy stuff when device tree contains
+         * mmc-spi-slot node.
+         */
+        if (of_find_compatible_node(NULL, NULL, "mmc-spi-slot"))
+                return 0;
         return fsl_spi_init(&mpc832x_spi_boardinfo, 1, mpc83xx_spi_cs_control);
 }
 machine_device_initcall(mpc832x_rdb, mpc832x_spi_init);