clk: mvebu: support for 98DX3236 SoC

The 98DX3236, 98DX3336, 98DX4521 and variants have a different TCLK from
the Armada XP (200MHz vs 250MHz). The CPU core clock is fixed at 800MHz.

The clock gating options are a subset of those on the Armada XP.

The core clock divider is different to the Armada XP also.

Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>

1 files changed, 23 insertions, 0 deletions

diff --git a/drivers/clk/mvebu/clk-corediv.c b/drivers/clk/mvebu/clk-corediv.c
index d1e5863d3375..8491979f4096 100644
--- a/drivers/clk/mvebu/clk-corediv.c
+++ b/drivers/clk/mvebu/clk-corediv.c
@@ -71,6 +71,10 @@ static const struct clk_corediv_desc mvebu_corediv_desc[] = {
 	{ .mask = 0x3f, .offset = 8, .fieldbit = 1 }, /* NAND clock */
 };
 
+static const struct clk_corediv_desc mv98dx3236_corediv_desc[] = {
+	{ .mask = 0x0f, .offset = 6, .fieldbit = 26 }, /* NAND clock */
+};
+
 #define to_corediv_clk(p) container_of(p, struct clk_corediv, hw)
 
 static int clk_corediv_is_enabled(struct clk_hw *hwclk)
@@ -232,6 +236,18 @@ static const struct clk_corediv_soc_desc armada375_corediv_soc = {
 	.ratio_offset = 0x4,
 };
 
+static const struct clk_corediv_soc_desc mv98dx3236_corediv_soc = {
+	.descs = mv98dx3236_corediv_desc,
+	.ndescs = ARRAY_SIZE(mv98dx3236_corediv_desc),
+	.ops = {
+		.recalc_rate = clk_corediv_recalc_rate,
+		.round_rate = clk_corediv_round_rate,
+		.set_rate = clk_corediv_set_rate,
+	},
+	.ratio_reload = BIT(10),
+	.ratio_offset = 0x8,
+};
+
 static void __init
 mvebu_corediv_clk_init(struct device_node *node,
 		       const struct clk_corediv_soc_desc *soc_desc)
@@ -313,3 +329,10 @@ static void __init armada380_corediv_clk_init(struct device_node *node)
 }
 CLK_OF_DECLARE(armada380_corediv_clk, "marvell,armada-380-corediv-clock",
 	       armada380_corediv_clk_init);
+
+static void __init mv98dx3236_corediv_clk_init(struct device_node *node)
+{
+	return mvebu_corediv_clk_init(node, &mv98dx3236_corediv_soc);
+}
+CLK_OF_DECLARE(mv98dx3236_corediv_clk, "marvell,mv98dx3236-corediv-clock",
+	       mv98dx3236_corediv_clk_init);