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From 19f7515528fbd1dc0d45e4b5ce6531c1406fc8d8 Mon Sep 17 00:00:00 2001
From: Maxime Ripard <maxime@cerno.tech>
Date: Fri, 7 Feb 2020 17:03:46 +0100
Subject: [PATCH] clk: bcm: rpi: Add DT provider for the clocks
For the upcoming registration of the clocks provided by the firmware, make
sure it's exposed to the device tree providers.
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: linux-clk@vger.kernel.org
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
---
drivers/clk/bcm/clk-raspberrypi.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
--- a/drivers/clk/bcm/clk-raspberrypi.c
+++ b/drivers/clk/bcm/clk-raspberrypi.c
@@ -31,6 +31,8 @@
#define A2W_PLL_FRAC_BITS 20
+#define NUM_FW_CLKS 16
+
struct raspberrypi_clk {
struct device *dev;
struct rpi_firmware *firmware;
@@ -285,11 +287,13 @@ static struct clk_hw *raspberrypi_regist
static int raspberrypi_clk_probe(struct platform_device *pdev)
{
+ struct clk_hw_onecell_data *clk_data;
struct device_node *firmware_node;
struct device *dev = &pdev->dev;
struct rpi_firmware *firmware;
struct raspberrypi_clk *rpi;
struct clk_hw *hw;
+ int ret;
firmware_node = of_parse_phandle(dev->of_node, "raspberrypi,firmware", 0);
if (!firmware_node) {
@@ -309,6 +313,11 @@ static int raspberrypi_clk_probe(struct
rpi->firmware = firmware;
platform_set_drvdata(pdev, rpi);
+ clk_data = devm_kzalloc(dev, struct_size(clk_data, hws, NUM_FW_CLKS),
+ GFP_KERNEL);
+ if (!clk_data)
+ return -ENOMEM;
+
hw = raspberrypi_register_pllb(rpi);
if (IS_ERR(hw)) {
dev_err(dev, "Failed to initialize pllb, %ld\n", PTR_ERR(hw));
@@ -318,6 +327,13 @@ static int raspberrypi_clk_probe(struct
hw = raspberrypi_register_pllb_arm(rpi);
if (IS_ERR(hw))
return PTR_ERR(hw);
+ clk_data->hws[RPI_FIRMWARE_ARM_CLK_ID] = hw;
+ clk_data->num = RPI_FIRMWARE_ARM_CLK_ID + 1;
+
+ ret = devm_of_clk_add_hw_provider(dev, of_clk_hw_onecell_get,
+ clk_data);
+ if (ret)
+ return ret;
rpi->cpufreq = platform_device_register_data(dev, "raspberrypi-cpufreq",
-1, NULL, 0);
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