clk: qcom: cbf-msm8996: Add support for MSM8996 Pro

The CBF PLL on MSM8996 Pro has a /4 post divisor instead of /2. Handle the
difference accordingly.

Signed-off-by: Yassine Oudjana <[e-mail]>
Reviewed-by: Konrad Dybcio <[e-mail]>
Reviewed-by: Dmitry Baryshkov <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Bjorn Andersson <[e-mail]>

drivers/clk/qcom/clk-cbf-8996.c

···
 	[PLL_OFF_STATUS] = 0x28,
 };
 
-static const struct alpha_pll_config cbfpll_config = {
+static struct alpha_pll_config cbfpll_config = {
 	.l = 72,
 	.config_ctl_val = 0x200d4828,
 	.config_ctl_hi_val = 0x006,
···
 {
 	struct clk_hw *parent;
 
-	if (req->rate < (DIV_THRESHOLD / 2))
+	if (req->rate < (DIV_THRESHOLD / cbf_pll_postdiv.div))
 		return -EINVAL;
 
 	if (req->rate < DIV_THRESHOLD)
···
 	/* Switch CBF to use the primary PLL */
 	regmap_update_bits(regmap, CBF_MUX_OFFSET, CBF_MUX_PARENT_MASK, 0x1);
 
+	if (of_device_is_compatible(dev->of_node, "qcom,msm8996pro-cbf")) {
+		cbfpll_config.post_div_val = 0x3 << 8;
+		cbf_pll_postdiv.div = 4;
+	}
+
 	for (i = 0; i < ARRAY_SIZE(cbf_msm8996_hw_clks); i++) {
 		ret = devm_clk_hw_register(dev, cbf_msm8996_hw_clks[i]);
 		if (ret)
···
 
 static const struct of_device_id qcom_msm8996_cbf_match_table[] = {
 	{ .compatible = "qcom,msm8996-cbf" },
+	{ .compatible = "qcom,msm8996pro-cbf" },
 	{ /* sentinel */ },
 };
 MODULE_DEVICE_TABLE(of, qcom_msm8996_cbf_match_table);