clk: mediatek: mt7981: convert CLK_XTAL to CLK_PAD_CLK40M

Replace all uses of CLK_XTAL with CLK_PAD_CLK40M.

This will eventually let us remove CLK_PARENT_XTAL completely.

Reviewed-by: Julien Stephan <jstephan@baylibre.com>
Link: https://patch.msgid.link/20260310-clk-mtk-parent-cleanup-v1-5-66175ca8f637@baylibre.com
Signed-off-by: David Lechner <dlechner@baylibre.com>

diff --git a/drivers/clk/mediatek/clk-mt7981.c b/drivers/clk/mediatek/clk-mt7981.c
index 685abd844f2846b4e43bc8fed2fabfcaf5450f79..8c2944b7fb38df986c10a14d13c26f8cd3846765 100644 (file)
--- a/drivers/clk/mediatek/clk-mt7981.c
+++ b/drivers/clk/mediatek/clk-mt7981.c
@@ -18,8 +18,16 @@
 #define MT7981_CLK_PDN 0x250
 #define MT7981_CLK_PDN_EN_WRITE BIT(31)
 
+enum {
+       CLK_PAD_CLK40M,
+};
+
+static const ulong ext_clock_rates[] = {
+       [CLK_PAD_CLK40M] = 40 * MHZ,
+};
+
 #define FIXED_CLK0(_id, _rate)                                 \
-       FIXED_CLK(_id, CLK_XTAL, CLK_PARENT_XTAL, _rate)
+       FIXED_CLK(_id, CLK_PAD_CLK40M, CLK_PARENT_EXT, _rate)
 
 #define PLL_FACTOR(_id, _name, _parent, _mult, _div)                           \
        FACTOR(_id, _parent, _mult, _div, CLK_PARENT_APMIXED)
@@ -609,13 +617,16 @@ static const struct mtk_gate infracfg_gates[] = {
 };
 
 static const struct mtk_clk_tree mt7981_fixed_pll_clk_tree = {
+       .ext_clk_rates = ext_clock_rates,
+       .num_ext_clks = ARRAY_SIZE(ext_clock_rates),
        .fdivs_offs = CLK_APMIXED_NR_CLK,
-       .xtal_rate = 40 * MHZ,
        .fclks = fixed_pll_clks,
        .num_fclks = ARRAY_SIZE(fixed_pll_clks),
 };
 
 static const struct mtk_clk_tree mt7981_topckgen_clk_tree = {
+       .ext_clk_rates = ext_clock_rates,
+       .num_ext_clks = ARRAY_SIZE(ext_clock_rates),
        .fdivs_offs = CLK_TOP_CB_M_416M,
        .muxes_offs = CLK_TOP_NFI1X_SEL,
        .fclks = top_fixed_clks,
@@ -628,6 +639,8 @@ static const struct mtk_clk_tree mt7981_topckgen_clk_tree = {
 };
 
 static const struct mtk_clk_tree mt7981_infracfg_clk_tree = {
+       .ext_clk_rates = ext_clock_rates,
+       .num_ext_clks = ARRAY_SIZE(ext_clock_rates),
        .fdivs_offs = CLK_INFRA_66M_MCK,
        .muxes_offs = CLK_INFRA_UART0_SEL,
        .gates_offs = CLK_INFRA_GPT_STA,