Three fixes for omaps for v5.4-rc cycle

Two regression fixes for omap3 iommu. I missed applying two omap3
 related iommu pdata quirks patches earlier because the kbuild test
 robot produced errors on them for missing dependencies.
 
 Fix ti-sysc interconnect target module driver handling for watchdog
 quirk. I must have tested this earlier only with watchdog service
 running, but clearly it does not do what it needs to do.
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Merge tag 'omap-for-v5.4/fixes-rc4-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into arm/fixes

Three fixes for omaps for v5.4-rc cycle

Two regression fixes for omap3 iommu. I missed applying two omap3
related iommu pdata quirks patches earlier because the kbuild test
robot produced errors on them for missing dependencies.

Fix ti-sysc interconnect target module driver handling for watchdog
quirk. I must have tested this earlier only with watchdog service
running, but clearly it does not do what it needs to do.

* tag 'omap-for-v5.4/fixes-rc4-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  bus: ti-sysc: Fix watchdog quirk handling
  ARM: OMAP2+: Add pdata for OMAP3 ISP IOMMU
  ARM: OMAP2+: Plug in device_enable/idle ops for IOMMUs

Link: https://lore.kernel.org/r/pull-1571848757-282222@atomide.com
Signed-off-by: Olof Johansson <olof@lixom.net>

arch/arm/mach-omap2/pdata-quirks.c

@@ -89,6 +89,13 @@ static struct iommu_platform_data omap3_iommu_pdata = {
 	.reset_name = "mmu",
 	.assert_reset = omap_device_assert_hardreset,
 	.deassert_reset = omap_device_deassert_hardreset,
+	.device_enable = omap_device_enable,
+	.device_idle = omap_device_idle,
+};
+
+static struct iommu_platform_data omap3_iommu_isp_pdata = {
+	.device_enable = omap_device_enable,
+	.device_idle = omap_device_idle,
 };
 
 static int omap3_sbc_t3730_twl_callback(struct device *dev,
@@ -424,6 +431,8 @@ static struct iommu_platform_data omap4_iommu_pdata = {
 	.reset_name = "mmu_cache",
 	.assert_reset = omap_device_assert_hardreset,
 	.deassert_reset = omap_device_deassert_hardreset,
+	.device_enable = omap_device_enable,
+	.device_idle = omap_device_idle,
 };
 #endif
 
@@ -617,6 +626,8 @@ static struct of_dev_auxdata omap_auxdata_lookup[] = {
 #ifdef CONFIG_ARCH_OMAP3
 	OF_DEV_AUXDATA("ti,omap2-iommu", 0x5d000000, "5d000000.mmu",
 		       &omap3_iommu_pdata),
+	OF_DEV_AUXDATA("ti,omap2-iommu", 0x480bd400, "480bd400.mmu",
+		       &omap3_iommu_isp_pdata),
 	OF_DEV_AUXDATA("ti,omap3-smartreflex-core", 0x480cb000,
 		       "480cb000.smartreflex", &omap_sr_pdata[OMAP_SR_CORE]),
 	OF_DEV_AUXDATA("ti,omap3-smartreflex-mpu-iva", 0x480c9000,

drivers/bus/ti-sysc.c

@@ -74,6 +74,7 @@ static const char * const clock_names[SYSC_MAX_CLOCKS] = {
  * @clk_disable_quirk: module specific clock disable quirk
  * @reset_done_quirk: module specific reset done quirk
  * @module_enable_quirk: module specific enable quirk
+ * @module_disable_quirk: module specific disable quirk
  */
 struct sysc {
 	struct device *dev;
@@ -100,6 +101,7 @@ struct sysc {
 	void (*clk_disable_quirk)(struct sysc *sysc);
 	void (*reset_done_quirk)(struct sysc *sysc);
 	void (*module_enable_quirk)(struct sysc *sysc);
+	void (*module_disable_quirk)(struct sysc *sysc);
 };
 
 static void sysc_parse_dts_quirks(struct sysc *ddata, struct device_node *np,
@@ -959,6 +961,9 @@ static int sysc_disable_module(struct device *dev)
 	if (ddata->offsets[SYSC_SYSCONFIG] == -ENODEV)
 		return 0;
 
+	if (ddata->module_disable_quirk)
+		ddata->module_disable_quirk(ddata);
+
 	regbits = ddata->cap->regbits;
 	reg = sysc_read(ddata, ddata->offsets[SYSC_SYSCONFIG]);
 
@@ -1248,6 +1253,9 @@ static const struct sysc_revision_quirk sysc_revision_quirks[] = {
 		   SYSC_MODULE_QUIRK_SGX),
 	SYSC_QUIRK("wdt", 0, 0, 0x10, 0x14, 0x502a0500, 0xfffff0f0,
 		   SYSC_MODULE_QUIRK_WDT),
+	/* Watchdog on am3 and am4 */
+	SYSC_QUIRK("wdt", 0x44e35000, 0, 0x10, 0x14, 0x502a0500, 0xfffff0f0,
+		   SYSC_MODULE_QUIRK_WDT | SYSC_QUIRK_SWSUP_SIDLE),
 
 #ifdef DEBUG
 	SYSC_QUIRK("adc", 0, 0, 0x10, -1, 0x47300001, 0xffffffff, 0),
@@ -1440,14 +1448,14 @@ static void sysc_reset_done_quirk_wdt(struct sysc *ddata)
 				   !(val & 0x10), 100,
 				   MAX_MODULE_SOFTRESET_WAIT);
 	if (error)
-		dev_warn(ddata->dev, "wdt disable spr failed\n");
+		dev_warn(ddata->dev, "wdt disable step1 failed\n");
 
-	sysc_write(ddata, wps, 0x5555);
+	sysc_write(ddata, spr, 0x5555);
 	error = readl_poll_timeout(ddata->module_va + wps, val,
 				   !(val & 0x10), 100,
 				   MAX_MODULE_SOFTRESET_WAIT);
 	if (error)
-		dev_warn(ddata->dev, "wdt disable wps failed\n");
+		dev_warn(ddata->dev, "wdt disable step2 failed\n");
 }
 
 static void sysc_init_module_quirks(struct sysc *ddata)
@@ -1471,8 +1479,10 @@ static void sysc_init_module_quirks(struct sysc *ddata)
 	if (ddata->cfg.quirks & SYSC_MODULE_QUIRK_SGX)
 		ddata->module_enable_quirk = sysc_module_enable_quirk_sgx;
 
-	if (ddata->cfg.quirks & SYSC_MODULE_QUIRK_WDT)
+	if (ddata->cfg.quirks & SYSC_MODULE_QUIRK_WDT) {
 		ddata->reset_done_quirk = sysc_reset_done_quirk_wdt;
+		ddata->module_disable_quirk = sysc_reset_done_quirk_wdt;
+	}
 }
 
 static int sysc_clockdomain_init(struct sysc *ddata)