clk: qcom: gcc-ipq6018: add qdss_at clock needed for wifi operation

Without it system hangs upon wifi firmware load. It should be enabled by
remoteproc/wifi driver. Bindings already exist for it, so add it based
on vendor code.
Signed-off-by: Mantas Pucka <mantas@8devices.com>
Link: https://lore.kernel.org/r/1706001970-26032-1-git-send-email-mantas@8devices.comSigned-off-by: Bjorn Andersson <andersson@kernel.org>

drivers/clk/qcom/gcc-ipq6018.c

@@ -3522,6 +3522,22 @@ static struct clk_branch gcc_prng_ahb_clk = {
 	},
 };
 
+static struct clk_branch gcc_qdss_at_clk = {
+	.halt_reg = 0x29024,
+	.clkr = {
+		.enable_reg = 0x29024,
+		.enable_mask = BIT(0),
+		.hw.init = &(struct clk_init_data){
+			.name = "gcc_qdss_at_clk",
+			.parent_hws = (const struct clk_hw *[]){
+				&qdss_at_clk_src.clkr.hw },
+			.num_parents = 1,
+			.flags = CLK_SET_RATE_PARENT,
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
 static struct clk_branch gcc_qdss_dap_clk = {
 	.halt_reg = 0x29084,
 	.clkr = {
@@ -4361,6 +4377,7 @@ static struct clk_regmap *gcc_ipq6018_clks[] = {
 	[GCC_SYS_NOC_PCIE0_AXI_CLK] = &gcc_sys_noc_pcie0_axi_clk.clkr,
 	[GCC_PCIE0_PIPE_CLK] = &gcc_pcie0_pipe_clk.clkr,
 	[GCC_PRNG_AHB_CLK] = &gcc_prng_ahb_clk.clkr,
+	[GCC_QDSS_AT_CLK] = &gcc_qdss_at_clk.clkr,
 	[GCC_QDSS_DAP_CLK] = &gcc_qdss_dap_clk.clkr,
 	[GCC_QPIC_AHB_CLK] = &gcc_qpic_ahb_clk.clkr,
 	[GCC_QPIC_CLK] = &gcc_qpic_clk.clkr,