diff --git a/Documentation/devicetree/bindings/arm/omap/omap.txt b/Documentation/devicetree/bindings/arm/omap/omap.txt
index a2bd593881cab361fa739d9a12e63ee7ba63ef50..66422d6631841d9e6eba9be63e453176ebd43f2e 100644
--- a/Documentation/devicetree/bindings/arm/omap/omap.txt
+++ b/Documentation/devicetree/bindings/arm/omap/omap.txt
@@ -23,6 +23,7 @@ Optional properties:
during suspend.
- ti,no-reset-on-init: When present, the module should not be reset at init
- ti,no-idle-on-init: When present, the module should not be idled at init
+- ti,no-idle: When present, the module is never allowed to idle.
Example:
diff --git a/arch/arm/boot/dts/armada-xp-axpwifiap.dts b/arch/arm/boot/dts/armada-xp-axpwifiap.dts
index 23fc670c0427710168ce41ef012f9e37b8218eb6..5c21b236721fcb9d6e2b5055cbc89ae9527df7f1 100644
--- a/arch/arm/boot/dts/armada-xp-axpwifiap.dts
+++ b/arch/arm/boot/dts/armada-xp-axpwifiap.dts
@@ -70,8 +70,8 @@
soc {
ranges = <MBUS_ID(0xf0, 0x01) 0 0 0xf1000000 0x100000
MBUS_ID(0x01, 0x1d) 0 0 0xfff00000 0x100000
- MBUS_ID(0x09, 0x09) 0 0 0xf8100000 0x10000
- MBUS_ID(0x09, 0x05) 0 0 0xf8110000 0x10000>;
+ MBUS_ID(0x09, 0x09) 0 0 0xf1100000 0x10000
+ MBUS_ID(0x09, 0x05) 0 0 0xf1110000 0x10000>;
pcie-controller {
status = "okay";
diff --git a/arch/arm/boot/dts/armada-xp-db.dts b/arch/arm/boot/dts/armada-xp-db.dts
index f774101416a5522841c475252d0a86842e475b29..ebe1d267406df5ab30e3a3189b669733eb8fcaa4 100644
--- a/arch/arm/boot/dts/armada-xp-db.dts
+++ b/arch/arm/boot/dts/armada-xp-db.dts
@@ -76,8 +76,8 @@
ranges = <MBUS_ID(0xf0, 0x01) 0 0 0xf1000000 0x100000
MBUS_ID(0x01, 0x1d) 0 0 0xfff00000 0x100000
MBUS_ID(0x01, 0x2f) 0 0 0xf0000000 0x1000000
- MBUS_ID(0x09, 0x09) 0 0 0xf8100000 0x10000
- MBUS_ID(0x09, 0x05) 0 0 0xf8110000 0x10000>;
+ MBUS_ID(0x09, 0x09) 0 0 0xf1100000 0x10000
+ MBUS_ID(0x09, 0x05) 0 0 0xf1110000 0x10000>;
devbus-bootcs {
status = "okay";
diff --git a/arch/arm/boot/dts/armada-xp-gp.dts b/arch/arm/boot/dts/armada-xp-gp.dts
index 4878d7353069fc2720e15d76af307618daced15c..5730b875c4f51a1aa2743d8881b18d6dbc0b27cd 100644
--- a/arch/arm/boot/dts/armada-xp-gp.dts
+++ b/arch/arm/boot/dts/armada-xp-gp.dts
@@ -95,8 +95,8 @@
ranges = <MBUS_ID(0xf0, 0x01) 0 0 0xf1000000 0x100000
MBUS_ID(0x01, 0x1d) 0 0 0xfff00000 0x100000
MBUS_ID(0x01, 0x2f) 0 0 0xf0000000 0x1000000
- MBUS_ID(0x09, 0x09) 0 0 0xf8100000 0x10000
- MBUS_ID(0x09, 0x05) 0 0 0xf8110000 0x10000>;
+ MBUS_ID(0x09, 0x09) 0 0 0xf1100000 0x10000
+ MBUS_ID(0x09, 0x05) 0 0 0xf1110000 0x10000>;
devbus-bootcs {
status = "okay";
diff --git a/arch/arm/boot/dts/armada-xp-lenovo-ix4-300d.dts b/arch/arm/boot/dts/armada-xp-lenovo-ix4-300d.dts
index fb9e1bbf23385b85b0b82ddb153b922b2d2e0178..8af463f26ea1e162360952dbc03c0a9bda807cd5 100644
--- a/arch/arm/boot/dts/armada-xp-lenovo-ix4-300d.dts
+++ b/arch/arm/boot/dts/armada-xp-lenovo-ix4-300d.dts
@@ -65,8 +65,8 @@
soc {
ranges = <MBUS_ID(0xf0, 0x01) 0 0 0xd0000000 0x100000
MBUS_ID(0x01, 0x1d) 0 0 0xfff00000 0x100000
- MBUS_ID(0x09, 0x09) 0 0 0xf8100000 0x10000
- MBUS_ID(0x09, 0x05) 0 0 0xf8110000 0x10000>;
+ MBUS_ID(0x09, 0x09) 0 0 0xf1100000 0x10000
+ MBUS_ID(0x09, 0x05) 0 0 0xf1110000 0x10000>;
pcie-controller {
status = "okay";
diff --git a/arch/arm/boot/dts/armada-xp-linksys-mamba.dts b/arch/arm/boot/dts/armada-xp-linksys-mamba.dts
index 6e9820e141f8de5a850edcd7e74f0ea2a1acd1ed..b89e6cf1271a1370aead2a000e729cefad376ab0 100644
--- a/arch/arm/boot/dts/armada-xp-linksys-mamba.dts
+++ b/arch/arm/boot/dts/armada-xp-linksys-mamba.dts
@@ -70,8 +70,8 @@
soc {
ranges = <MBUS_ID(0xf0, 0x01) 0 0 0xf1000000 0x100000
MBUS_ID(0x01, 0x1d) 0 0 0xfff00000 0x100000
- MBUS_ID(0x09, 0x09) 0 0 0xf8100000 0x10000
- MBUS_ID(0x09, 0x05) 0 0 0xf8110000 0x10000>;
+ MBUS_ID(0x09, 0x09) 0 0 0xf1100000 0x10000
+ MBUS_ID(0x09, 0x05) 0 0 0xf1110000 0x10000>;
pcie-controller {
status = "okay";
diff --git a/arch/arm/boot/dts/armada-xp-matrix.dts b/arch/arm/boot/dts/armada-xp-matrix.dts
index 6ab33837a2b6d0a5aaf4e48763bb838451a346bd..6522b04f4a8e7c7a759100153d7d990f1fb160d3 100644
--- a/arch/arm/boot/dts/armada-xp-matrix.dts
+++ b/arch/arm/boot/dts/armada-xp-matrix.dts
@@ -68,8 +68,8 @@
soc {
ranges = <MBUS_ID(0xf0, 0x01) 0 0 0xf1000000 0x100000
MBUS_ID(0x01, 0x1d) 0 0 0xfff00000 0x100000
- MBUS_ID(0x09, 0x09) 0 0 0xf8100000 0x10000
- MBUS_ID(0x09, 0x05) 0 0 0xf8110000 0x10000>;
+ MBUS_ID(0x09, 0x09) 0 0 0xf1100000 0x10000
+ MBUS_ID(0x09, 0x05) 0 0 0xf1110000 0x10000>;
internal-regs {
serial@12000 {
diff --git a/arch/arm/boot/dts/armada-xp-netgear-rn2120.dts b/arch/arm/boot/dts/armada-xp-netgear-rn2120.dts
index 62175a8848bc2234343a8627d7cdf0ababfee851..d19f44c709257d9a35644d71cb49a04e354c42d8 100644
--- a/arch/arm/boot/dts/armada-xp-netgear-rn2120.dts
+++ b/arch/arm/boot/dts/armada-xp-netgear-rn2120.dts
@@ -64,8 +64,8 @@
soc {
ranges = <MBUS_ID(0xf0, 0x01) 0 0 0xd0000000 0x100000
MBUS_ID(0x01, 0x1d) 0 0 0xfff00000 0x100000
- MBUS_ID(0x09, 0x09) 0 0 0xf8100000 0x10000
- MBUS_ID(0x09, 0x05) 0 0 0xf8110000 0x10000>;
+ MBUS_ID(0x09, 0x09) 0 0 0xf1100000 0x10000
+ MBUS_ID(0x09, 0x05) 0 0 0xf1110000 0x10000>;
pcie-controller {
status = "okay";
diff --git a/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts b/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts
index a5db17782e085662d01a22683c5c364be5c25c8c..853bd392a4fe20155ed1469a23175213814ca9dc 100644
--- a/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts
+++ b/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts
@@ -65,9 +65,9 @@
soc {
ranges = <MBUS_ID(0xf0, 0x01) 0 0 0xd0000000 0x100000
MBUS_ID(0x01, 0x1d) 0 0 0xfff00000 0x100000
- MBUS_ID(0x01, 0x2f) 0 0 0xf0000000 0x8000000
- MBUS_ID(0x09, 0x09) 0 0 0xf8100000 0x10000
- MBUS_ID(0x09, 0x05) 0 0 0xf8110000 0x10000>;
+ MBUS_ID(0x01, 0x2f) 0 0 0xe8000000 0x8000000
+ MBUS_ID(0x09, 0x09) 0 0 0xf1100000 0x10000
+ MBUS_ID(0x09, 0x05) 0 0 0xf1110000 0x10000>;
devbus-bootcs {
status = "okay";
diff --git a/arch/arm/boot/dts/armada-xp-synology-ds414.dts b/arch/arm/boot/dts/armada-xp-synology-ds414.dts
index 2391b11dc546b859dd3ab23a700be5a8a63ea83b..d17dab0a6f513e9c04ff2675f5f9d44d7f6953b3 100644
--- a/arch/arm/boot/dts/armada-xp-synology-ds414.dts
+++ b/arch/arm/boot/dts/armada-xp-synology-ds414.dts
@@ -78,8 +78,8 @@
soc {
ranges = <MBUS_ID(0xf0, 0x01) 0 0 0xf1000000 0x100000
MBUS_ID(0x01, 0x1d) 0 0 0xfff00000 0x100000
- MBUS_ID(0x09, 0x09) 0 0 0xf8100000 0x10000
- MBUS_ID(0x09, 0x05) 0 0 0xf8110000 0x10000>;
+ MBUS_ID(0x09, 0x09) 0 0 0xf1100000 0x10000
+ MBUS_ID(0x09, 0x05) 0 0 0xf1110000 0x10000>;
pcie-controller {
status = "okay";
diff --git a/arch/arm/boot/dts/dra7.dtsi b/arch/arm/boot/dts/dra7.dtsi
index c4d9175b90dceab5aa64ca1973505652bf325bee..f82aa44c3ceed540fef7e291c571c2b49c5b2e1f 100644
--- a/arch/arm/boot/dts/dra7.dtsi
+++ b/arch/arm/boot/dts/dra7.dtsi
@@ -1500,6 +1500,16 @@
0x48485200 0x2E00>;
#address-cells = <1>;
#size-cells = <1>;
+
+ /*
+ * Do not allow gating of cpsw clock as workaround
+ * for errata i877. Keeping internal clock disabled
+ * causes the device switching characteristics
+ * to degrade over time and eventually fail to meet
+ * the data manual delay time/skew specs.
+ */
+ ti,no-idle;
+
/*
* rx_thresh_pend
* rx_pend
diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
index e9f65fec55c0b9beacfdf694424e601b4673327e..b6d62e4cdfddaf53f8d3aa7c1768b5e83255673e 100644
--- a/arch/arm/mach-omap2/omap_hwmod.c
+++ b/arch/arm/mach-omap2/omap_hwmod.c
@@ -2200,6 +2200,11 @@ static int _enable(struct omap_hwmod *oh)
*/
static int _idle(struct omap_hwmod *oh)
{
+ if (oh->flags & HWMOD_NO_IDLE) {
+ oh->_int_flags |= _HWMOD_SKIP_ENABLE;
+ return 0;
+ }
+
pr_debug("omap_hwmod: %s: idling\n", oh->name);
if (oh->_state != _HWMOD_STATE_ENABLED) {
@@ -2504,6 +2509,8 @@ static int __init _init(struct omap_hwmod *oh, void *data)
oh->flags |= HWMOD_INIT_NO_RESET;
if (of_find_property(np, "ti,no-idle-on-init", NULL))
oh->flags |= HWMOD_INIT_NO_IDLE;
+ if (of_find_property(np, "ti,no-idle", NULL))
+ oh->flags |= HWMOD_NO_IDLE;
}
oh->_state = _HWMOD_STATE_INITIALIZED;
@@ -2630,7 +2637,7 @@ static void __init _setup_postsetup(struct omap_hwmod *oh)
* XXX HWMOD_INIT_NO_IDLE does not belong in hwmod data -
* it should be set by the core code as a runtime flag during startup
*/
- if ((oh->flags & HWMOD_INIT_NO_IDLE) &&
+ if ((oh->flags & (HWMOD_INIT_NO_IDLE | HWMOD_NO_IDLE)) &&
(postsetup_state == _HWMOD_STATE_IDLE)) {
oh->_int_flags |= _HWMOD_SKIP_ENABLE;
postsetup_state = _HWMOD_STATE_ENABLED;
diff --git a/arch/arm/mach-omap2/omap_hwmod.h b/arch/arm/mach-omap2/omap_hwmod.h
index 76bce11c85a40c477a5b87aab919d5b8dfded5e8..7c7a31169475b72bc8fbbe2f0dabf015b395f257 100644
--- a/arch/arm/mach-omap2/omap_hwmod.h
+++ b/arch/arm/mach-omap2/omap_hwmod.h
@@ -525,6 +525,8 @@ struct omap_hwmod_omap4_prcm {
* or idled.
* HWMOD_OPT_CLKS_NEEDED: The optional clocks are needed for the module to
* operate and they need to be handled at the same time as the main_clk.
+ * HWMOD_NO_IDLE: Do not idle the hwmod at all. Useful to handle certain
+ * IPs like CPSW on DRA7, where clocks to this module cannot be disabled.
*/
#define HWMOD_SWSUP_SIDLE (1 << 0)
#define HWMOD_SWSUP_MSTANDBY (1 << 1)
@@ -541,6 +543,7 @@ struct omap_hwmod_omap4_prcm {
#define HWMOD_SWSUP_SIDLE_ACT (1 << 12)
#define HWMOD_RECONFIG_IO_CHAIN (1 << 13)
#define HWMOD_OPT_CLKS_NEEDED (1 << 14)
+#define HWMOD_NO_IDLE (1 << 15)
/*
* omap_hwmod._int_flags definitions