[PATCH 5/5] clk: mediatek: mt7623: remap peri clock ID and add MUX

[Christian Marangi]

Upstream kernel linux makes use of peri clock MUX to setup UART.

Add definition for these and add remap table as in the upstream clock ID
order gates are before MUX but we require MUX first and then clocks in
our downstream driver.

Convert the peri clk tree to MUX + GATE implementation.

Signed-off-by: Christian Marangi <ansuelsmth at gmail.com>
---
 drivers/clk/mediatek/clk-mt7623.c | 83 +++++++++++++++++++++++++++++--
 1 file changed, 80 insertions(+), 3 deletions(-)

diff --git a/drivers/clk/mediatek/clk-mt7623.c b/drivers/clk/mediatek/clk-mt7623.c
index 78e390d49f8..d0b80f48b0a 100644
--- a/drivers/clk/mediatek/clk-mt7623.c
+++ b/drivers/clk/mediatek/clk-mt7623.c
@@ -807,6 +807,74 @@ static const struct mtk_gate infra_cgs[] = {
 };
 
 /* pericfg */
+static const int peri_id_offs_map[] = {
+	/* MUX CLK */
+	[CLK_PERI_UART0_SEL]			= 1,
+	[CLK_PERI_UART1_SEL]			= 2,
+	[CLK_PERI_UART2_SEL]			= 3,
+	[CLK_PERI_UART3_SEL]			= 4,
+	/* GATE CLK */
+	[CLK_PERI_NFI]				= 5,
+	[CLK_PERI_THERM]			= 6,
+	[CLK_PERI_PWM1]				= 7,
+	[CLK_PERI_PWM2]				= 8,
+	[CLK_PERI_PWM3]				= 9,
+	[CLK_PERI_PWM4]				= 10,
+	[CLK_PERI_PWM5]				= 11,
+	[CLK_PERI_PWM6]				= 12,
+	[CLK_PERI_PWM7]				= 13,
+	[CLK_PERI_PWM]				= 14,
+	[CLK_PERI_USB0]				= 15,
+	[CLK_PERI_USB1]				= 16,
+	[CLK_PERI_AP_DMA]			= 17,
+	[CLK_PERI_MSDC30_0]			= 18,
+	[CLK_PERI_MSDC30_1]			= 19,
+	[CLK_PERI_MSDC30_2]			= 20,
+	[CLK_PERI_MSDC30_3]			= 21,
+	[CLK_PERI_MSDC50_3]			= 22,
+	[CLK_PERI_NLI]				= 23,
+	[CLK_PERI_UART0]			= 24,
+	[CLK_PERI_UART1]			= 25,
+	[CLK_PERI_UART2]			= 26,
+	[CLK_PERI_UART3]			= 27,
+	[CLK_PERI_BTIF]				= 28,
+	[CLK_PERI_I2C0]				= 29,
+	[CLK_PERI_I2C1]				= 30,
+	[CLK_PERI_I2C2]				= 31,
+	[CLK_PERI_I2C3]				= 32,
+	[CLK_PERI_AUXADC]			= 33,
+	[CLK_PERI_SPI0]				= 34,
+	[CLK_PERI_ETH]				= 35,
+	[CLK_PERI_USB0_MCU]			= 36,
+	[CLK_PERI_USB1_MCU]			= 37,
+	[CLK_PERI_USB_SLV]			= 38,
+	[CLK_PERI_GCPU]				= 39,
+	[CLK_PERI_NFI_ECC]			= 40,
+	[CLK_PERI_NFI_PAD]			= 41,
+	[CLK_PERI_FLASH]			= 42,
+	[CLK_PERI_HOST89_INT]			= 43,
+	[CLK_PERI_HOST89_SPI]			= 44,
+	[CLK_PERI_HOST89_DVD]			= 45,
+	[CLK_PERI_SPI1]				= 46,
+	[CLK_PERI_SPI2]				= 47,
+	[CLK_PERI_FCI]				= 48,
+};
+
+#define TOP_PARENT(_id) PARENT(_id, CLK_PARENT_TOPCKGEN)
+#define XTAL_PARENT(_id) PARENT(_id, CLK_PARENT_XTAL)
+
+static const struct mtk_parent uart_ck_sel_parents[] = {
+	XTAL_PARENT(CLK_XTAL),
+	TOP_PARENT(CLK_TOP_UART_SEL),
+};
+
+static const struct mtk_composite peri_muxes[] = {
+	MUX_MIXED(CLK_PERI_UART0_SEL, uart_ck_sel_parents, 0x40C, 0, 1),
+	MUX_MIXED(CLK_PERI_UART1_SEL, uart_ck_sel_parents, 0x40C, 1, 1),
+	MUX_MIXED(CLK_PERI_UART2_SEL, uart_ck_sel_parents, 0x40C, 2, 1),
+	MUX_MIXED(CLK_PERI_UART3_SEL, uart_ck_sel_parents, 0x40C, 3, 1),
+};
+
 static const struct mtk_gate_regs peri0_cg_regs = {
 	.set_ofs = 0x8,
 	.clr_ofs = 0x10,
@@ -980,6 +1048,7 @@ static int mt7623_topckgen_probe(struct udevice *dev)
 static const struct mtk_clk_tree mt7623_clk_gate_tree = {
 	/* Each CLK ID for gates clock starts at index 1 */
 	.gates_offs = 1,
+	.xtal_rate = 26 * MHZ,
 };
 
 static int mt7623_infracfg_probe(struct udevice *dev)
@@ -988,10 +1057,18 @@ static int mt7623_infracfg_probe(struct udevice *dev)
 					infra_cgs);
 }
 
+static const struct mtk_clk_tree mt7623_clk_peri_tree = {
+	.id_offs_map = peri_id_offs_map,
+	.muxes_offs = peri_id_offs_map[CLK_PERI_UART0_SEL],
+	.gates_offs = peri_id_offs_map[CLK_PERI_NFI],
+	.muxes = peri_muxes,
+	.gates = peri_cgs,
+	.xtal_rate = 26 * MHZ,
+};
+
 static int mt7623_pericfg_probe(struct udevice *dev)
 {
-	return mtk_common_clk_gate_init(dev, &mt7623_clk_gate_tree,
-					peri_cgs);
+	return mtk_common_clk_infrasys_init(dev, &mt7623_clk_peri_tree);
 }
 
 static int mt7623_hifsys_probe(struct udevice *dev)
@@ -1098,7 +1175,7 @@ U_BOOT_DRIVER(mtk_clk_pericfg) = {
 	.of_match = mt7623_pericfg_compat,
 	.probe = mt7623_pericfg_probe,
 	.priv_auto	= sizeof(struct mtk_cg_priv),
-	.ops = &mtk_clk_gate_ops,
+	.ops = &mtk_clk_infrasys_ops,
 	.flags = DM_FLAG_PRE_RELOC,
 };
 
-- 
2.45.2