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ARM: OMAP3: hwmod data: add HDQ/1-wire hwmod 

Add the HDQ1W hwmod for OMAP34xx, OMAP36xx, and AM3505/3517 devices.
According to the respective TRMs, it doesn't appear to be available for the
816x/814x or the AM335x.

The OCPIF_SWSUP_IDLE flag is added to work around an apparent hardware
bug: the hardware is not taking the CM_FCLKEN*_CORE.EN_HDQ bit into
account when considering whether to go idle:

    http://www.spinics.net/lists/linux-omap/msg63576.html

This causes HDQ transfers to fail or become corrupt.  Thanks to
NeilBrown for his help diagnosing and testing fixes for this problem.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: NeilBrown <neilb@suse.de>
Tested-by: NeilBrown <neilb@suse.de>
This commit is contained in:
Paul Walmsley 2012-05-08 11:34:28 -06:00
parent 03d830e8dc
commit 45a4bb067c
1 changed files with 28 additions and 0 deletions
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28
arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
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@ -1980,6 +1980,22 @@ static struct omap_hwmod omap3xxx_usb_tll_hs_hwmod = {
},
};
static struct omap_hwmod omap3xxx_hdq1w_hwmod = {
.name = "hdq1w",
.mpu_irqs = omap2_hdq1w_mpu_irqs,
.main_clk = "hdq_fck",
.prcm = {
.omap2 = {
.module_offs = CORE_MOD,
.prcm_reg_id = 1,
.module_bit = OMAP3430_EN_HDQ_SHIFT,
.idlest_reg_id = 1,
.idlest_idle_bit = OMAP3430_ST_HDQ_SHIFT,
},
},
.class = &omap2_hdq1w_class,
};
/*
* interfaces
*/
@ -3059,6 +3075,16 @@ static struct omap_hwmod_ocp_if omap3xxx_l4_core__usb_tll_hs = {
.user = OCP_USER_MPU | OCP_USER_SDMA,
};
/* l4_core -> hdq1w interface */
static struct omap_hwmod_ocp_if omap3xxx_l4_core__hdq1w = {
.master = &omap3xxx_l4_core_hwmod,
.slave = &omap3xxx_hdq1w_hwmod,
.clk = "hdq_ick",
.addr = omap2_hdq1w_addr_space,
.user = OCP_USER_MPU | OCP_USER_SDMA,
.flags = OMAP_FIREWALL_L4 | OCPIF_SWSUP_IDLE,
};
static struct omap_hwmod_ocp_if *omap3xxx_hwmod_ocp_ifs[] __initdata = {
&omap3xxx_l3_main__l4_core,
&omap3xxx_l3_main__l4_per,
@ -3151,6 +3177,7 @@ static struct omap_hwmod_ocp_if *omap34xx_hwmod_ocp_ifs[] __initdata = {
&omap34xx_l4_core__sr1,
&omap34xx_l4_core__sr2,
&omap3xxx_l4_core__mailbox,
&omap3xxx_l4_core__hdq1w,
NULL
};
@ -3170,6 +3197,7 @@ static struct omap_hwmod_ocp_if *omap36xx_hwmod_ocp_ifs[] __initdata = {
&omap3xxx_l4_core__usb_tll_hs,
&omap3xxx_l4_core__es3plus_mmc1,
&omap3xxx_l4_core__es3plus_mmc2,
&omap3xxx_l4_core__hdq1w,
NULL
};