linux-kernel - [PATCH 11/13] clk: eyeq: add EyeQ6H west fixed factor clocks

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Message-Id: <20241031-mbly-clk-v1-11-89d8b28e3006@bootlin.com>
Date: Thu, 31 Oct 2024 16:53:01 +0100
From: Théo Lebrun <theo.lebrun@...tlin.com>
To: Vladimir Kondratiev <vladimir.kondratiev@...ileye.com>, 
 Grégory Clement <gregory.clement@...tlin.com>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Michael Turquette <mturquette@...libre.com>, 
 Stephen Boyd <sboyd@...nel.org>, 
 Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Cc: linux-mips@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org, 
 Thomas Petazzoni <thomas.petazzoni@...tlin.com>, 
 Tawfik Bayouk <tawfik.bayouk@...ileye.com>, 
 Théo Lebrun <theo.lebrun@...tlin.com>
Subject: [PATCH 11/13] clk: eyeq: add EyeQ6H west fixed factor clocks

Previous setup was:
 - pll-west clock registered from driver at of_clk_init();
 - Both OCC and UART clocks registered from DT using fixed-factor-clock
   compatible.

Now that drivers/clk/clk-eyeq.c supports registering fixed factors, use
that capability to register west-per-occ and west-per-uart (giving them
proper names at the same time).

Also switch from hard-coded index 0 for pll-west to using the
EQ6HC_WEST_PLL_PER constant by exposed dt-bindings headers.

All get exposed at of_clk_init() because they get used by the AMBA PL011
serial ports. Those are instantiated before platform bus infrastructure.

Signed-off-by: Théo Lebrun <theo.lebrun@...tlin.com>
---
 drivers/clk/clk-eyeq.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/drivers/clk/clk-eyeq.c b/drivers/clk/clk-eyeq.c
index 4f6aa852038cfc4db0fc4473cf5e50c6c254b9ee..f3ef4293b97bd553fbfd74b8dac4811772729458 100644
--- a/drivers/clk/clk-eyeq.c
+++ b/drivers/clk/clk-eyeq.c
@@ -708,12 +708,20 @@ static const struct eqc_early_match_data eqc_eyeq6h_central_early_match_data __i
 
 /* Required early for UART. */
 static const struct eqc_pll eqc_eyeq6h_west_early_plls[] = {
-	{ .index = 0, .name = "pll-west", .reg64 = 0x074 },
+	{ .index = EQ6HC_WEST_PLL_PER, .name = "pll-west", .reg64 = 0x074 },
+};
+
+static const struct eqc_fixed_factor eqc_eyeq6h_west_early_fixed_factors[] = {
+	{ EQ6HC_WEST_PER_OCC,  "west-per-occ",  1, 10, EQ6HC_WEST_PLL_PER },
+	{ EQ6HC_WEST_PER_UART, "west-per-uart", 1, 1,  EQ6HC_WEST_PER_OCC },
 };
 
 static const struct eqc_early_match_data eqc_eyeq6h_west_early_match_data __initconst = {
 	.early_pll_count	= ARRAY_SIZE(eqc_eyeq6h_west_early_plls),
 	.early_plls		= eqc_eyeq6h_west_early_plls,
+
+	.early_fixed_factor_count = ARRAY_SIZE(eqc_eyeq6h_west_early_fixed_factors),
+	.early_fixed_factors = eqc_eyeq6h_west_early_fixed_factors,
 };
 
 static void __init eqc_early_init(struct device_node *np,

-- 
2.47.0