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Commit 7f35e63d authored by Faiz Abbas's avatar Faiz Abbas Committed by Tony Lindgren
Browse files

bus: ti-sysc: Add support for using ti-sysc for MCAN on dra76x 



The dra76x MCAN generic interconnect module has a its own
format for the bits in the control registers.

Therefore add a new module type, new regbits and new capabilities
specific to the MCAN module.

Acked-by: default avatarRob Herring <robh@kernel.org>
CC: Tony Lindgren <tony@atomide.com>
Signed-off-by: default avatarFaiz Abbas <faiz_abbas@ti.com>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
parent 91c17a70

Documentation/devicetree/bindings/bus/ti-sysc.txt

+1 −0
Original line number Diff line number Diff line
@@ -36,6 +36,7 @@ Required standard properties: 
		"ti,sysc-omap-aes"

		"ti,sysc-mcasp"

		"ti,sysc-usb-host-fs"

		"ti,sysc-dra7-mcan"



- reg		shall have register areas implemented for the interconnect

		target module in question such as revision, sysc and syss

drivers/bus/ti-sysc.c

+18 −0
Original line number Diff line number Diff line
@@ -1552,6 +1552,23 @@ static const struct sysc_capabilities sysc_omap4_usb_host_fs = { 
	.regbits = &sysc_regbits_omap4_usb_host_fs,

};



static const struct sysc_regbits sysc_regbits_dra7_mcan = {

	.dmadisable_shift = -ENODEV,

	.midle_shift = -ENODEV,

	.sidle_shift = -ENODEV,

	.clkact_shift = -ENODEV,

	.enwkup_shift = 4,

	.srst_shift = 0,

	.emufree_shift = -ENODEV,

	.autoidle_shift = -ENODEV,

};



static const struct sysc_capabilities sysc_dra7_mcan = {

	.type = TI_SYSC_DRA7_MCAN,

	.sysc_mask = SYSC_DRA7_MCAN_ENAWAKEUP | SYSC_OMAP4_SOFTRESET,

	.regbits = &sysc_regbits_dra7_mcan,

};



static int sysc_init_pdata(struct sysc *ddata)

{

	struct ti_sysc_platform_data *pdata = dev_get_platdata(ddata->dev);
@@ -1743,6 +1760,7 @@ static const struct of_device_id sysc_match[] = { 
	{ .compatible = "ti,sysc-mcasp", .data = &sysc_omap4_mcasp, },

	{ .compatible = "ti,sysc-usb-host-fs",

	  .data = &sysc_omap4_usb_host_fs, },

	{ .compatible = "ti,sysc-dra7-mcan", .data = &sysc_dra7_mcan, },

	{  },

};

MODULE_DEVICE_TABLE(of, sysc_match);

include/dt-bindings/bus/ti-sysc.h

+2 −0
Original line number Diff line number Diff line
@@ -15,6 +15,8 @@ 
/* SmartReflex sysc found on 36xx and later */

#define SYSC_OMAP3_SR_ENAWAKEUP		(1 << 26)



#define SYSC_DRA7_MCAN_ENAWAKEUP	(1 << 4)



/* SYSCONFIG STANDBYMODE/MIDLEMODE/SIDLEMODE supported by hardware */

#define SYSC_IDLE_FORCE			0

#define SYSC_IDLE_NO			1

include/linux/platform_data/ti-sysc.h

+1 −0
Original line number Diff line number Diff line
@@ -14,6 +14,7 @@ enum ti_sysc_module_type { 
	TI_SYSC_OMAP4_SR,

	TI_SYSC_OMAP4_MCASP,

	TI_SYSC_OMAP4_USB_HOST_FS,

	TI_SYSC_DRA7_MCAN,

};



struct ti_sysc_cookie {