msm: Copper: Add board and device tree support for SPI driver
This patch describes the basic attributes in the device tree
for the MSM SPI driver. Support for specifying the GPIO pins
associated with SPI is not yet present.
Change-Id: Idcb5cc28d84a2fa59463e698628da48cb058c652
Signed-off-by: Harini Jayaraman <harinij@codeaurora.org>
diff --git a/Documentation/devicetree/bindings/spi/spi_qsd.txt b/Documentation/devicetree/bindings/spi/spi_qsd.txt
new file mode 100644
index 0000000..5839f63
--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/spi_qsd.txt
@@ -0,0 +1,16 @@
+Qualcomm Serial Peripheral Interface (SPI)
+
+Required properties:
+- compatible : should be "qcom,spi-qup-v2".
+- reg : offset and length of the QUP register map.
+- interrupts : should contain the QUP core interrupt.
+- spi-max-frequency : specifies maximum SPI clock frequency, Units - Hz.
+
+Example:
+ spi@f9924000 {
+ compatible = "qcom,spi-qup-v2";
+ reg = <0xf9924000 0x1000>;
+ interrupts = <96>;
+ spi-max-frequency = <24000000>;
+ };
+
diff --git a/arch/arm/boot/dts/msmcopper.dts b/arch/arm/boot/dts/msmcopper.dts
index 6561c71..b00237a 100644
--- a/arch/arm/boot/dts/msmcopper.dts
+++ b/arch/arm/boot/dts/msmcopper.dts
@@ -70,4 +70,10 @@
qcom,bam-dma-res-pipes = <6>;
};
+ spi@f9924000 {
+ compatible = "qcom,spi-qup-v2";
+ reg = <0xf9924000 0x1000>;
+ interrupts = <96>;
+ spi-max-frequency = <24000000>;
+ };
};
diff --git a/arch/arm/mach-msm/board-copper.c b/arch/arm/mach-msm/board-copper.c
index a372eb6..f26187e 100644
--- a/arch/arm/mach-msm/board-copper.c
+++ b/arch/arm/mach-msm/board-copper.c
@@ -77,6 +77,8 @@
CLK_DUMMY("dfab_clk", DFAB_CLK, NULL, 0),
CLK_DUMMY("dma_bam_pclk", DMA_BAM_P_CLK, NULL, 0),
CLK_DUMMY("mem_clk", NULL, NULL, 0),
+ CLK_DUMMY("core_clk", SPI_CLK, "spi_qsd.1", OFF),
+ CLK_DUMMY("iface_clk", SPI_P_CLK, "spi_qsd.1", OFF),
};
struct clock_init_data msm_dummy_clock_init_data __initdata = {
@@ -89,6 +91,8 @@
"msm_serial_hsl.0", NULL),
OF_DEV_AUXDATA("qcom,hsusb-otg", 0xF9A55000, \
"msm_otg", NULL),
+ OF_DEV_AUXDATA("qcom,spi-qup-v2", 0xF9924000, \
+ "spi_qsd.1", NULL),
{}
};