[PATCH AUTOSEL for 4.9 082/219] ARM: DRA7: hwmod_data: Prevent wait_target_disable error for usb_otg_ss

Sasha Levin
2018-03-03T23:50:58Z

From: Roger Quadros <rogerq@ti.com>

[ Upstream commit e2d54fe76997301b49311bde7ba8ef52b47896f9 ]

It seems that if L3_INIT clkdomain is kept in HW_AUTO while usb_otg_ss
is in use then there are random chances that the usb_otg_ss module
will fail to completely idle. i.e. IDLEST = 0x2 instead of 0x3.

Preventing L3_INIT from HW_AUTO while usb_otg_ss module is in use
fixes this issue.

We don't know yet if usb_otg_ss instances 3 and 4 are affected by this
issue or not so don't add this flag for those instances.

Cc: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
---
arch/arm/mach-omap2/omap_hwmod_7xx_data.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/arch/arm/mach-omap2/omap_hwmod_7xx_data.c b/arch/arm/mach-omap2/omap_hwmod_7xx_data.c
index 1ab7096af8e2..39137231f2b2 100644
--- a/arch/arm/mach-omap2/omap_hwmod_7xx_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_7xx_data.c
@@ -2572,6 +2572,7 @@ static struct omap_hwmod dra7xx_usb_otg_ss1_hwmod = {
.class = &dra7xx_usb_otg_ss_hwmod_class,
.clkdm_name = "l3init_clkdm",
.main_clk = "dpll_core_h13x2_ck",
+ .flags = HWMOD_CLKDM_NOAUTO,
.prcm = {
.omap4 = {
.clkctrl_offs = DRA7XX_CM_L3INIT_USB_OTG_SS1_CLKCTRL_OFFSET,
@@ -2593,6 +2594,7 @@ static struct omap_hwmod dra7xx_usb_otg_ss2_hwmod = {
.class = &dra7xx_usb_otg_ss_hwmod_class,
.clkdm_name = "l3init_clkdm",
.main_clk = "dpll_core_h13x2_ck",
+ .flags = HWMOD_CLKDM_NOAUTO,
.prcm = {
.omap4 = {
.clkctrl_offs = DRA7XX_CM_L3INIT_USB_OTG_SS2_CLKCTRL_OFFSET,
--
2.14.1