clk: actions: Add NIC and ETHERNET clock support for Actions S500 SoC

Add support for the missing NIC and ETHERNET clocks in the Actions Semi
Owl S500 SoC clock driver.

Additionally, change APB clock parent from AHB to the newly added NIC.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@gmail.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/d62e4f1f85c5cef05be14d9e8143e88bbddd2e0f.1623354574.git.cristian.ciocaltea@gmail.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

Author: cristicc

drivers/clk/actions/owl-s500.c

@@ -113,6 +113,7 @@ static const char * const sensor_clk_mux_p[] = { "hosc", "bisp_clk" };
 static const char * const sd_clk_mux_p[] = { "dev_clk", "nand_pll_clk" };
 static const char * const pwm_clk_mux_p[] = { "losc", "hosc" };
 static const char * const ahbprediv_clk_mux_p[] = { "dev_clk", "display_pll_clk", "nand_pll_clk", "ddr_pll_clk" };
+static const char * const nic_clk_mux_p[] = { "dev_clk", "display_pll_clk", "nand_pll_clk", "ddr_pll_clk" };
 static const char * const uart_clk_mux_p[] = { "hosc", "dev_pll_clk" };
 static const char * const de_clk_mux_p[] = { "display_pll_clk", "dev_clk" };
 static const char * const i2s_clk_mux_p[] = { "audio_pll_clk" };
@@ -194,14 +195,20 @@ static OWL_GATE(hdmi_clk, "hdmi_clk", "hosc", CMU_DEVCLKEN1, 3, 0, 0);
 
 /* divider clocks */
 static OWL_DIVIDER(h_clk, "h_clk", "ahbprediv_clk", CMU_BUSCLK1, 2, 2, NULL, 0, 0);
-static OWL_DIVIDER(apb_clk, "apb_clk", "ahb_clk", CMU_BUSCLK1, 14, 2, NULL, 0, 0);
+static OWL_DIVIDER(apb_clk, "apb_clk", "nic_clk", CMU_BUSCLK1, 14, 2, NULL, 0, 0);
 static OWL_DIVIDER(rmii_ref_clk, "rmii_ref_clk", "ethernet_pll_clk", CMU_ETHERNETPLL, 1, 1, rmii_ref_div_table, 0, 0);
 
 /* factor clocks */
 static OWL_FACTOR(de1_clk, "de_clk1", "de_clk", CMU_DECLK, 0, 4, de_factor_table, 0, 0);
 static OWL_FACTOR(de2_clk, "de_clk2", "de_clk", CMU_DECLK, 4, 4, de_factor_table, 0, 0);
 
 /* composite clocks */
+static OWL_COMP_DIV(nic_clk, "nic_clk", nic_clk_mux_p,
+			OWL_MUX_HW(CMU_BUSCLK1, 4, 3),
+			{ 0 },
+			OWL_DIVIDER_HW(CMU_BUSCLK1, 16, 2, 0, NULL),
+			0);
+
 static OWL_COMP_DIV(ahbprediv_clk, "ahbprediv_clk", ahbprediv_clk_mux_p,
 			OWL_MUX_HW(CMU_BUSCLK1, 8, 3),
 			{ 0 },
@@ -317,6 +324,10 @@ static OWL_COMP_FIXED_FACTOR(i2c3_clk, "i2c3_clk", "ethernet_pll_clk",
 			OWL_GATE_HW(CMU_DEVCLKEN1, 31, 0),
 			1, 5, 0);
 
+static OWL_COMP_FIXED_FACTOR(ethernet_clk, "ethernet_clk", "ethernet_pll_clk",
+			OWL_GATE_HW(CMU_DEVCLKEN1, 22, 0),
+			1, 20, 0);
+
 static OWL_COMP_DIV(uart0_clk, "uart0_clk", uart_clk_mux_p,
 			OWL_MUX_HW(CMU_UART0CLK, 16, 1),
 			OWL_GATE_HW(CMU_DEVCLKEN1, 6, 0),
@@ -451,6 +462,8 @@ static struct owl_clk_common *s500_clks[] = {
 	&apb_clk.common,
 	&dmac_clk.common,
 	&gpio_clk.common,
+	&nic_clk.common,
+	&ethernet_clk.common,
 };
 
 static struct clk_hw_onecell_data s500_hw_clks = {
@@ -510,6 +523,8 @@ static struct clk_hw_onecell_data s500_hw_clks = {
 		[CLK_APB]		= &apb_clk.common.hw,
 		[CLK_DMAC]		= &dmac_clk.common.hw,
 		[CLK_GPIO]		= &gpio_clk.common.hw,
+		[CLK_NIC]		= &nic_clk.common.hw,
+		[CLK_ETHERNET]		= &ethernet_clk.common.hw,
 	},
 	.num = CLK_NR_CLKS,
 };