Add SNVS clock gating and SNVS node for DT

The following patch set adds support for clock gating of the SNVS peripheral required on the Vybrid platform. Also adds a device tree node for this peripheral.

This patchset was send before along with the patch which had clock changes to the rtc-snvs driver. Since these could not be merged then, till the changes for rtc-snvs landed in the mainline, I am sending them anew as the changes are now in the for-next branch
https://git.kernel.org/cgit/linux/kernel/git/shawnguo/linux.git/log/?h=for-next

The initial discussion can be found at the below links for the earlier set of patches:

[RESEND] v2:
https://lkml.org/lkml/2014/12/3/23

v2:
https://lkml.org/lkml/2014/11/7/295

v1:
https://lkml.org/lkml/2014/9/26/492

Sanchayan Maity (2):
ARM: imx: clk-vf610: Add clock for SNVS
ARM: dts: vfxxx: Add SNVS node

 arch/arm/boot/dts/vf500.dtsi            |    4 ++++
 arch/arm/boot/dts/vfxxx.dtsi            |   14 ++++++++++++++
 arch/arm/mach-imx/clk-vf610.c           |    2 ++
 include/dt-bindings/clock/vf610-clock.h |    3 ++-
 4 files changed, 22 insertions(+), 1 deletion(-)

1.7.9.5

Add support for clock gating of the SNVS peripheral.

---
 arch/arm/mach-imx/clk-vf610.c           |    2 ++
 include/dt-bindings/clock/vf610-clock.h |    3 ++-
 2 files changed, 4 insertions(+), 1 deletion(-)

index cb21777..b7688b6 100644
@@ -380,6 +380,8 @@ static void __init vf610_clocks_init(struct device_node *ccm_node)
 	clk[VF610_CLK_DMAMUX2] = imx_clk_gate2("dmamux2", "platform_bus", CCM_CCGR6, CCM_CCGRx_CGn(1));
 	clk[VF610_CLK_DMAMUX3] = imx_clk_gate2("dmamux3", "platform_bus", CCM_CCGR6, CCM_CCGRx_CGn(2));
 
+	clk[VF610_CLK_SNVS] = imx_clk_gate2("snvs-rtc", "ipg_bus", CCM_CCGR6, CCM_CCGRx_CGn(7));
+
 	imx_check_clocks(clk, ARRAY_SIZE(clk));
 
 	clk_set_parent(clk[VF610_CLK_QSPI0_SEL], clk[VF610_CLK_PLL1_PFD4]);

index 801c0ac..68f1886 100644
@@ -192,6 +192,7 @@
 #define VF610_PLL5_BYPASS		179
 #define VF610_PLL6_BYPASS		180
 #define VF610_PLL7_BYPASS		181
-#define VF610_CLK_END			182
+#define VF610_CLK_SNVS			182
+#define VF610_CLK_END			183
 
 #endif /* __DT_BINDINGS_CLOCK_VF610_H */

1.7.9.5

Add device tree node for the Secure Non-Volatile Storage (SNVS) on the VF610 platform. The SNVS block also has a Real Time Counter (RTC).

---
 arch/arm/boot/dts/vf500.dtsi |    4 ++++
 arch/arm/boot/dts/vfxxx.dtsi |   14 ++++++++++++++
 2 files changed, 18 insertions(+)

index 2901609..0d0de864 100644
@@ -130,6 +130,10 @@
 	interrupts = <GIC_SPI 86 IRQ_TYPE_LEVEL_HIGH>;
 };
 
+&snvsrtc {
+	interrupts = <GIC_SPI 100 IRQ_TYPE_LEVEL_HIGH>;
+};
+
 &src {
 	interrupts = <GIC_SPI 96 IRQ_TYPE_LEVEL_HIGH>;
 };

index a55e1f9..ae5c358 100644
@@ -351,6 +351,20 @@
 				status = "disabled";
 			};
 
+			snvs0: snvs at 400a7000 {
+			    compatible = "fsl,sec-v4.0-mon", "simple-bus";
+				#address-cells = <1>;
+				#size-cells = <1>;
+				ranges = <0 0x400a7000 0x2000>;
+
+				snvsrtc: snvs-rtc-lp at 34 {
+					compatible = "fsl,sec-v4.0-mon-rtc-lp";
+					reg = <0x34 0x58>;
+					clocks = <&clks VF610_CLK_SNVS>;
+					clock-names = "snvs-rtc";
+				};
+			};
+
 			uart4: serial at 400a9000 {
 				compatible = "fsl,vf610-lpuart";
 				reg = <0x400a9000 0x1000>;

1.7.9.5

Applied both, thanks.