[PATCH v2] Since am437x have the same clock structure with am335x [1][2], reuse the code from Tony Lindgren's patch [3] to fix dcan probe failed on am437x platform.

[dillon . minfei]

From: dillon min <dillon.min...@gmail.com>

Fixes: 1a5cd7c23cc5 ("bus: ti-sysc: Enable all clocks directly during init to 
read revision")

[1]: https://www.ti.com/lit/pdf/spruh73 Chapter-23, Figure 23-1. DCAN
Integration
[2]: https://www.ti.com/lit/pdf/spruhl7 Chapter-25, Figure 25-1. DCAN
Integration
[3]: commit 516f1117d0fb ("ARM: dts: Configure osc clock for d_can on am335x")

Signed-off-by: dillon min <dillon.min...@gmail.com>
---

Hi Stephen,

This changes correct commit messages based on your reviewing.
make Fixes tags to oneline.
make all commit message tags at the end of commit message


 arch/arm/boot/dts/am437x-l4.dtsi | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/arch/arm/boot/dts/am437x-l4.dtsi b/arch/arm/boot/dts/am437x-l4.dtsi
index 0d0f9fe4a882..4129affde54e 100644
--- a/arch/arm/boot/dts/am437x-l4.dtsi
+++ b/arch/arm/boot/dts/am437x-l4.dtsi
@@ -1541,8 +1541,9 @@
                        reg = <0xcc020 0x4>;
                        reg-names = "rev";
                        /* Domains (P, C): per_pwrdm, l4ls_clkdm */
-                       clocks = <&l4ls_clkctrl AM4_L4LS_D_CAN0_CLKCTRL 0>;
-                       clock-names = "fck";
+                       clocks = <&l4ls_clkctrl AM4_L4LS_D_CAN0_CLKCTRL 0>,
+                       <&dcan0_fck>;
+                       clock-names = "fck", "osc";
                        #address-cells = <1>;
                        #size-cells = <1>;
                        ranges = <0x0 0xcc000 0x2000>;
@@ -1550,6 +1551,8 @@
                        dcan0: can@0 {
                                compatible = "ti,am4372-d_can", 
"ti,am3352-d_can";
                                reg = <0x0 0x2000>;
+                               clocks = <&dcan0_fck>;
+                               clock-names = "fck";
                                syscon-raminit = <&scm_conf 0x644 0>;
                                interrupts = <GIC_SPI 52 IRQ_TYPE_LEVEL_HIGH>;
                                status = "disabled";
@@ -1561,8 +1564,9 @@
                        reg = <0xd0020 0x4>;
                        reg-names = "rev";
                        /* Domains (P, C): per_pwrdm, l4ls_clkdm */
-                       clocks = <&l4ls_clkctrl AM4_L4LS_D_CAN1_CLKCTRL 0>;
-                       clock-names = "fck";
+                       clocks = <&l4ls_clkctrl AM4_L4LS_D_CAN1_CLKCTRL 0>,
+                       <&dcan1_fck>;
+                       clock-names = "fck", "osc";
                        #address-cells = <1>;
                        #size-cells = <1>;
                        ranges = <0x0 0xd0000 0x2000>;
@@ -1570,6 +1574,8 @@
                        dcan1: can@0 {
                                compatible = "ti,am4372-d_can", 
"ti,am3352-d_can";
                                reg = <0x0 0x2000>;
+                               clocks = <&dcan1_fck>;
+                               clock-name = "fck";
                                syscon-raminit = <&scm_conf 0x644 1>;
                                interrupts = <GIC_SPI 49 IRQ_TYPE_LEVEL_HIGH>;
                                status = "disabled";
-- 
2.7.4