[PATCH 08/20] ram: k3-ddrss: Add j722s DDR resume sequence

[Richard Genoud (TI)]

As the j722s and am62p resume sequence differs on the way they are
detecting that the board is resuming, we should have a specific
compatible for each one of them.

For that purpose, introduce ti,j722s-ddrss compatible.

Signed-off-by: Richard Genoud (TI) <richard.genoud at bootlin.com>
---
 arch/arm/dts/k3-j722s-r5-evm.dts |  4 ++++
 drivers/ram/k3-ddrss/k3-ddrss.c  | 12 ++++++++++++
 2 files changed, 16 insertions(+)

diff --git a/arch/arm/dts/k3-j722s-r5-evm.dts b/arch/arm/dts/k3-j722s-r5-evm.dts
index e1ef5d181ed7..cc4a5910673b 100644
--- a/arch/arm/dts/k3-j722s-r5-evm.dts
+++ b/arch/arm/dts/k3-j722s-r5-evm.dts
@@ -11,6 +11,10 @@
 #include "k3-am62a-ddr.dtsi"
 #include "k3-j722s-r5.dtsi"
 
+&memorycontroller {
+	compatible = "ti,j722s-ddrss", "ti,am62a-ddrss";
+};
+
 /* WKUP UART0 is used for DM firmware logs */
 &wkup_uart0 {
 	status = "okay";
diff --git a/drivers/ram/k3-ddrss/k3-ddrss.c b/drivers/ram/k3-ddrss/k3-ddrss.c
index 7b2d2e0814b8..7b23123ab00d 100644
--- a/drivers/ram/k3-ddrss/k3-ddrss.c
+++ b/drivers/ram/k3-ddrss/k3-ddrss.c
@@ -1283,6 +1283,11 @@ static int k3_ddrss_get_info(struct udevice *dev, struct ram_info *info)
 	return 0;
 }
 
+__weak bool j7xx_board_is_resuming(void)
+{
+	return false;
+}
+
 static struct ram_ops k3_ddrss_ops = {
 	.get_info = k3_ddrss_get_info,
 };
@@ -1301,11 +1306,18 @@ static const struct k3_ddrss_data j721s2_data = {
 	.flags = MULTI_DDR_SUBSYSTEM,
 };
 
+static const struct k3_ddrss_data j722s_data = {
+	.flags = SINGLE_DDR_SUBSYSTEM,
+	.is_lpm_resume = j7xx_board_is_resuming,
+	.ddrss_deassert_retention = am62xx_ddrss_deassert_retention,
+};
+
 static const struct udevice_id k3_ddrss_ids[] = {
 	{.compatible = "ti,am62a-ddrss", .data = (ulong)&am62xx_data, },
 	{.compatible = "ti,am64-ddrss", .data = (ulong)&k3_data, },
 	{.compatible = "ti,j721e-ddrss", .data = (ulong)&k3_data, },
 	{.compatible = "ti,j721s2-ddrss", .data = (ulong)&j721s2_data, },
+	{.compatible = "ti,j722s-ddrss", .data = (ulong)&j722s_data, },
 	{}
 };