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