Commit 020003f7 authored by Tony Lindgren's avatar Tony Lindgren
Browse files

bus: ti-sysc: Add module enable quirk for audio AESS 



We must set the autogating bit on enable for AESS (Audio Engine SubSystem)
when probed with ti-sysc interconnect target module driver. Otherwise it
won't idle properly.

Cc: Peter Ujfalusi <peter.ujfalusi@ti.com>
Tested-by: default avatarPeter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
parent 1819ef2e

drivers/bus/ti-sysc.c

+13 −1
Original line number Diff line number Diff line
@@ -1242,6 +1242,8 @@ static const struct sysc_revision_quirk sysc_revision_quirks[] = { 
		   SYSC_QUIRK_SWSUP_SIDLE),



	/* Quirks that need to be set based on detected module */

	SYSC_QUIRK("aess", 0, 0, 0x10, -1, 0x40000000, 0xffffffff,

		   SYSC_MODULE_QUIRK_AESS),

	SYSC_QUIRK("hdq1w", 0, 0, 0x14, 0x18, 0x00000006, 0xffffffff,

		   SYSC_MODULE_QUIRK_HDQ1W),

	SYSC_QUIRK("hdq1w", 0, 0, 0x14, 0x18, 0x0000000a, 0xffffffff,
@@ -1270,7 +1272,6 @@ static const struct sysc_revision_quirk sysc_revision_quirks[] = { 
#ifdef DEBUG

	SYSC_QUIRK("adc", 0, 0, 0x10, -1, 0x47300001, 0xffffffff, 0),

	SYSC_QUIRK("atl", 0, 0, -1, -1, 0x0a070100, 0xffffffff, 0),

	SYSC_QUIRK("aess", 0, 0, 0x10, -1, 0x40000000, 0xffffffff, 0),

	SYSC_QUIRK("cm", 0, 0, -1, -1, 0x40000301, 0xffffffff, 0),

	SYSC_QUIRK("control", 0, 0, 0x10, -1, 0x40000900, 0xffffffff, 0),

	SYSC_QUIRK("cpgmac", 0, 0x1200, 0x1208, 0x1204, 0x4edb1902,
@@ -1402,6 +1403,14 @@ static void sysc_clk_enable_quirk_hdq1w(struct sysc *ddata) 
	sysc_write(ddata, offset, val);

}



/* AESS (Audio Engine SubSystem) needs autogating set after enable */

static void sysc_module_enable_quirk_aess(struct sysc *ddata)

{

	int offset = 0x7c;	/* AESS_AUTO_GATING_ENABLE */



	sysc_write(ddata, offset, 1);

}



/* I2C needs extra enable bit toggling for reset */

static void sysc_clk_quirk_i2c(struct sysc *ddata, bool enable)

{
@@ -1484,6 +1493,9 @@ static void sysc_init_module_quirks(struct sysc *ddata) 
		return;

	}



	if (ddata->cfg.quirks & SYSC_MODULE_QUIRK_AESS)

		ddata->module_enable_quirk = sysc_module_enable_quirk_aess;



	if (ddata->cfg.quirks & SYSC_MODULE_QUIRK_SGX)

		ddata->module_enable_quirk = sysc_module_enable_quirk_sgx;

include/linux/platform_data/ti-sysc.h

+1 −0
Original line number Diff line number Diff line
@@ -49,6 +49,7 @@ struct sysc_regbits { 
	s8 emufree_shift;

};



#define SYSC_MODULE_QUIRK_AESS		BIT(19)

#define SYSC_MODULE_QUIRK_SGX		BIT(18)

#define SYSC_MODULE_QUIRK_HDQ1W		BIT(17)

#define SYSC_MODULE_QUIRK_I2C		BIT(16)