Merge tag 'omap-for-v5.7/ti-sysc-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into arm/drivers

Driver changes for ti-sysc for v5.7 merge window

Driver changes for ti-sysc interconnect target module driver mostly
to be able to probe display subsystem (DSS) without platform data:

- Rename clk_enable/disable quirks to less confusing pre and post
  reset quirks

- Enable module reset to work with modules with no sysconfig register

- Also consider non-existing module register when matching quirks

- Don't warn with nested ti-sysc devices

- Implement basic SoC revision handling

- Detect DSS related devices

- Implement DSS reset quirks

Note that there is also a DSS driver specific probe fix to allow
probing devices configured for interconnect target module data that
was agreed to be merged along with the ti-sysc driver changes.

And then there also changes to handle RTC, EDMA and PRUSS:

- Add module unlock quirk for RTC

- Detect EDMA modules

- Add support for handling PRUSS

* tag 'omap-for-v5.7/ti-sysc-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  bus: ti-sysc: Add support for PRUSS SYSC type
  dt-bindings: bus: ti-sysc: Add support for PRUSS SYSC type
  bus: ti-sysc: Detect EDMA and set quirk flags for tptc
  bus: ti-sysc: Fix wrong offset for display subsystem reset quirk
  bus: ti-sysc: Implement display subsystem reset quirk
  bus: ti-sysc: Detect display subsystem related devices
  bus: ti-sysc: Handle module unlock quirk needed for some RTC
  bus: ti-sysc: Implement SoC revision handling
  bus: ti-sysc: Don't warn about legacy property for nested ti-sysc devices
  bus: ti-sysc: Consider non-existing registers too when matching quirks
  bus: ti-sysc: Improve reset to work with modules with no sysconfig
  bus: ti-sysc: Rename clk related quirks to pre_reset and post_reset quirks
  bus: ti-sysc: Fix 1-wire reset quirk
  drm/omap: Prepare DSS for probing without legacy platform data

Link: https://lore.kernel.org/r/pull-1583511417-919838@atomide.com-3
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Documentation/devicetree/bindings/bus/ti-sysc.txt

@@ -38,6 +38,7 @@ Required standard properties:
 		"ti,sysc-dra7-mcasp"
 		"ti,sysc-usb-host-fs"
 		"ti,sysc-dra7-mcan"
+		"ti,sysc-pruss"
 
 - reg		shall have register areas implemented for the interconnect
 		target module in question such as revision, sysc and syss

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

@@ -397,10 +397,16 @@ static int ti_sysc_shutdown_module(struct device *dev,
 	return omap_hwmod_shutdown(cookie->data);
 }
 
+static bool ti_sysc_soc_type_gp(void)
+{
+	return omap_type() == OMAP2_DEVICE_TYPE_GP;
+}
+
 static struct of_dev_auxdata omap_auxdata_lookup[];
 
 static struct ti_sysc_platform_data ti_sysc_pdata = {
 	.auxdata = omap_auxdata_lookup,
+	.soc_type_gp = ti_sysc_soc_type_gp,
 	.init_clockdomain = ti_sysc_clkdm_init,
 	.clkdm_deny_idle = ti_sysc_clkdm_deny_idle,
 	.clkdm_allow_idle = ti_sysc_clkdm_allow_idle,

drivers/gpu/drm/omapdrm/dss/dss.c

@@ -1339,9 +1339,15 @@ static int dss_component_compare(struct device *dev, void *data)
 	return dev == child;
 }
 
+struct dss_component_match_data {
+	struct device *dev;
+	struct component_match **match;
+};
+
 static int dss_add_child_component(struct device *dev, void *data)
 {
-	struct component_match **match = data;
+	struct dss_component_match_data *cmatch = data;
+	struct component_match **match = cmatch->match;
 
 	/*
 	 * HACK
@@ -1352,7 +1358,17 @@ static int dss_add_child_component(struct device *dev, void *data)
 	if (strstr(dev_name(dev), "rfbi"))
 		return 0;
 
-	component_match_add(dev->parent, match, dss_component_compare, dev);
+	/*
+	 * Handle possible interconnect target modules defined within the DSS.
+	 * The DSS components can be children of an interconnect target module
+	 * after the device tree has been updated for the module data.
+	 * See also omapdss_boot_init() for compatible fixup.
+	 */
+	if (strstr(dev_name(dev), "target-module"))
+		return device_for_each_child(dev, cmatch,
+					     dss_add_child_component);
+
+	component_match_add(cmatch->dev, match, dss_component_compare, dev);
 
 	return 0;
 }
@@ -1395,6 +1411,7 @@ static int dss_probe_hardware(struct dss_device *dss)
 static int dss_probe(struct platform_device *pdev)
 {
 	const struct soc_device_attribute *soc;
+	struct dss_component_match_data cmatch;
 	struct component_match *match = NULL;
 	struct resource *dss_mem;
 	struct dss_device *dss;
@@ -1472,7 +1489,9 @@ static int dss_probe(struct platform_device *pdev)
 
 	omapdss_gather_components(&pdev->dev);
 
-	device_for_each_child(&pdev->dev, &match, dss_add_child_component);
+	cmatch.dev = &pdev->dev;
+	cmatch.match = &match;
+	device_for_each_child(&pdev->dev, &cmatch, dss_add_child_component);
 
 	r = component_master_add_with_match(&pdev->dev, &dss_component_ops, match);
 	if (r)

drivers/gpu/drm/omapdrm/dss/omapdss-boot-init.c

@@ -183,9 +183,24 @@ static const struct of_device_id omapdss_of_fixups_whitelist[] __initconst = {
 	{},
 };
 
+static void __init omapdss_find_children(struct device_node *np)
+{
+	struct device_node *child;
+
+	for_each_available_child_of_node(np, child) {
+		if (!of_find_property(child, "compatible", NULL))
+			continue;
+
+		omapdss_walk_device(child, true);
+
+		if (of_device_is_compatible(child, "ti,sysc"))
+			omapdss_find_children(child);
+	}
+}
+
 static int __init omapdss_boot_init(void)
 {
-	struct device_node *dss, *child;
+	struct device_node *dss;
 
 	INIT_LIST_HEAD(&dss_conv_list);
 
@@ -195,13 +210,7 @@ static int __init omapdss_boot_init(void)
 		return 0;
 
 	omapdss_walk_device(dss, true);
-
-	for_each_available_child_of_node(dss, child) {
-		if (!of_find_property(child, "compatible", NULL))
-			continue;
-
-		omapdss_walk_device(child, true);
-	}
+	omapdss_find_children(dss);
 
 	while (!list_empty(&dss_conv_list)) {
 		struct dss_conv_node *n;

include/dt-bindings/bus/ti-sysc.h

@@ -18,6 +18,10 @@
 
 #define SYSC_DRA7_MCAN_ENAWAKEUP	(1 << 4)
 
+/* PRUSS sysc found on AM33xx/AM43xx/AM57xx */
+#define SYSC_PRUSS_SUB_MWAIT		(1 << 5)
+#define SYSC_PRUSS_STANDBY_INIT		(1 << 4)
+
 /* SYSCONFIG STANDBYMODE/MIDLEMODE/SIDLEMODE supported by hardware */
 #define SYSC_IDLE_FORCE			0
 #define SYSC_IDLE_NO			1

include/linux/platform_data/ti-sysc.h

@@ -17,6 +17,7 @@ enum ti_sysc_module_type {
 	TI_SYSC_OMAP4_MCASP,
 	TI_SYSC_OMAP4_USB_HOST_FS,
 	TI_SYSC_DRA7_MCAN,
+	TI_SYSC_PRUSS,
 };
 
 struct ti_sysc_cookie {
@@ -49,6 +50,9 @@ struct sysc_regbits {
 	s8 emufree_shift;
 };
 
+#define SYSC_MODULE_QUIRK_PRUSS		BIT(24)
+#define SYSC_MODULE_QUIRK_DSS_RESET	BIT(23)
+#define SYSC_MODULE_QUIRK_RTC_UNLOCK	BIT(22)
 #define SYSC_QUIRK_CLKDM_NOAUTO		BIT(21)
 #define SYSC_QUIRK_FORCE_MSTANDBY	BIT(20)
 #define SYSC_MODULE_QUIRK_AESS		BIT(19)
@@ -141,6 +145,7 @@ struct clk;
 
 struct ti_sysc_platform_data {
 	struct of_dev_auxdata *auxdata;
+	bool (*soc_type_gp)(void);
 	int (*init_clockdomain)(struct device *dev, struct clk *fck,
 				struct clk *ick, struct ti_sysc_cookie *cookie);
 	void (*clkdm_deny_idle)(struct device *dev,