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Commit 818fcac5 authored by Anton Vorontsov's avatar Anton Vorontsov Committed by Kumar Gala
Browse files

powerpc/82xx: Add CPM USB Gadget support for MPC8272ADS boards 



- Add usb node;
- Configure pins and clocks;
- Enable USB function in BCSR.

The support was successfully tested using serial and ethernet gadget
drivers.

Signed-off-by: default avatarAnton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: default avatarKumar Gala <galak@kernel.crashing.org>
parent a70e88bc

arch/powerpc/boot/dts/mpc8272ads.dts

+8 −0
Original line number Diff line number Diff line
@@ -173,6 +173,14 @@ 
				fsl,cpm-command = <0xce00000>;

			};



			usb@11b60 {

				compatible = "fsl,mpc8272-cpm-usb";

				reg = <0x11b60 0x40 0x8b00 0x100>;

				interrupts = <11 8>;

				interrupt-parent = <&PIC>;

				mode = "peripheral";

			};



			mdio@10d40 {

				device_type = "mdio";

				compatible = "fsl,mpc8272ads-mdio-bitbang",

arch/powerpc/platforms/82xx/mpc8272_ads.c

+14 −0
Original line number Diff line number Diff line
@@ -99,6 +99,15 @@ static struct cpm_pin mpc8272_ads_pins[] = { 
	/* I2C */

	{3, 14, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_OPENDRAIN},

	{3, 15, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_OPENDRAIN},



	/* USB */

	{2, 10, CPM_PIN_INPUT | CPM_PIN_PRIMARY},

	{2, 11, CPM_PIN_INPUT | CPM_PIN_PRIMARY},

	{2, 20, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},

	{2, 24, CPM_PIN_INPUT | CPM_PIN_PRIMARY},

	{3, 23, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},

	{3, 24, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},

	{3, 25, CPM_PIN_INPUT | CPM_PIN_PRIMARY},

};



static void __init init_ioports(void)
@@ -112,6 +121,8 @@ static void __init init_ioports(void) 


	cpm2_clk_setup(CPM_CLK_SCC1, CPM_BRG1, CPM_CLK_RX);

	cpm2_clk_setup(CPM_CLK_SCC1, CPM_BRG1, CPM_CLK_TX);

	cpm2_clk_setup(CPM_CLK_SCC3, CPM_CLK8, CPM_CLK_RX);

	cpm2_clk_setup(CPM_CLK_SCC3, CPM_CLK8, CPM_CLK_TX);

	cpm2_clk_setup(CPM_CLK_SCC4, CPM_BRG4, CPM_CLK_RX);

	cpm2_clk_setup(CPM_CLK_SCC4, CPM_BRG4, CPM_CLK_TX);

	cpm2_clk_setup(CPM_CLK_FCC1, CPM_CLK11, CPM_CLK_RX);
@@ -147,6 +158,7 @@ static void __init mpc8272_ads_setup_arch(void) 
#define BCSR1_FETH_RST		0x04000000

#define BCSR1_RS232_EN1		0x02000000

#define BCSR1_RS232_EN2		0x01000000

#define BCSR3_USB_nEN		0x80000000

#define BCSR3_FETHIEN2		0x10000000

#define BCSR3_FETH2_RST		0x08000000
@@ -156,6 +168,8 @@ static void __init mpc8272_ads_setup_arch(void) 
	clrbits32(&bcsr[3], BCSR3_FETHIEN2);

	setbits32(&bcsr[3], BCSR3_FETH2_RST);



	clrbits32(&bcsr[3], BCSR3_USB_nEN);



	iounmap(bcsr);



	init_ioports();