Thread (55 messages) 55 messages, 5 authors, 2016-02-25

[PATCH 05/14] clk: sunxi: Add APB1 clock for A83T

From: Chen-Yu Tsai <hidden>
Date: 2016-01-31 03:33:59
Also in: linux-devicetree, linux-gpio, lkml

On Sun, Jan 31, 2016 at 9:20 AM, Vishnu Patekar
[off-list ref] wrote:
quoted hunk ↗ jump to hunk
APB1 is similar to sun4i-a10-apb0-clk, except different dividers.

This adds support for apb1 on A83T.

Signed-off-by: Vishnu Patekar <redacted>
---
 Documentation/devicetree/bindings/clock/sunxi.txt |  1 +
 drivers/clk/sunxi/clk-sunxi.c                     | 17 +++++++++++++++++
 2 files changed, 18 insertions(+)
diff --git a/Documentation/devicetree/bindings/clock/sunxi.txt b/Documentation/devicetree/bindings/clock/sunxi.txt
index bfd82f1..10637e7 100644
--- a/Documentation/devicetree/bindings/clock/sunxi.txt
+++ b/Documentation/devicetree/bindings/clock/sunxi.txt
@@ -49,6 +49,7 @@ Required properties:
        "allwinner,sun8i-a23-apb0-gates-clk" - for the APB0 gates on A23
        "allwinner,sun9i-a80-apb0-gates-clk" - for the APB0 gates on A80
        "allwinner,sun4i-a10-apb1-clk" - for the APB1 clock
+       "allwinner,sun8i-a83t-apb1-clk" - for the APB1 clock on A83T
        "allwinner,sun9i-a80-apb1-clk" - for the APB1 bus clock on A80
        "allwinner,sun4i-a10-apb1-gates-clk" - for the APB1 gates on A10
        "allwinner,sun5i-a13-apb1-gates-clk" - for the APB1 gates on A13
diff --git a/drivers/clk/sunxi/clk-sunxi.c b/drivers/clk/sunxi/clk-sunxi.c
index 02bbdf6..6510b0e 100644
--- a/drivers/clk/sunxi/clk-sunxi.c
+++ b/drivers/clk/sunxi/clk-sunxi.c
@@ -772,6 +772,22 @@ static const struct div_data sun4i_apb0_data __initconst = {
        .table  = sun4i_apb0_table,
 };

+
+static const struct clk_div_table sun8i_a83t_apb1_table[] __initconst = {
+       { .val = 0, .div = 1 },
+       { .val = 1, .div = 2 },
+       { .val = 2, .div = 3 },
+       { .val = 3, .div = 4 },
+       { } /* sentinel */
+};
The table is only needed if it cannot be handled by default or with
the div flags,
such as dividers not increasing or not power-of-2.

ChenYu
quoted hunk ↗ jump to hunk
+static const struct div_data sun8i_a83t_apb1_data __initconst = {
+       .shift  = 8,
+       .pow    = 0,
+       .width  = 2,
+       .table  = sun8i_a83t_apb1_table,
+};
+
 static void __init sunxi_divider_clk_setup(struct device_node *node,
                                           struct div_data *data)
 {
@@ -1027,6 +1043,7 @@ static const struct of_device_id clk_div_match[] __initconst = {
        {.compatible = "allwinner,sun8i-a23-axi-clk", .data = &sun8i_a23_axi_data,},
        {.compatible = "allwinner,sun4i-a10-ahb-clk", .data = &sun4i_ahb_data,},
        {.compatible = "allwinner,sun4i-a10-apb0-clk", .data = &sun4i_apb0_data,},
+       {.compatible = "allwinner,sun8i-a83t-apb1-clk", .data = &sun8i_a83t_apb1_data,},
        {}
 };

--
1.9.1
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