1 files changed, 0 insertions, 117 deletions
diff --git a/target/linux/brcm2708/patches-4.9/950-0112-i2c-bcm2835-Add-support-for-dynamic-clock.patch b/target/linux/brcm2708/patches-4.9/950-0112-i2c-bcm2835-Add-support-for-dynamic-clock.patch
deleted file mode 100644
index d287ae2cb7..0000000000
--- a/target/linux/brcm2708/patches-4.9/950-0112-i2c-bcm2835-Add-support-for-dynamic-clock.patch
+++ /dev/null
@@ -1,117 +0,0 @@
-From ce8663f1f101f8c7b9037c31269b0b31373737ad Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= <noralf@tronnes.org>
-Date: Tue, 27 Sep 2016 01:00:08 +0200
-Subject: [PATCH] i2c: bcm2835: Add support for dynamic clock
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-Support a dynamic clock by reading the frequency and setting the
-divisor in the transfer function instead of during probe.
-
-Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
-Reviewed-by: Martin Sperl <kernel@martin.sperl.org>
----
- drivers/i2c/busses/i2c-bcm2835.c | 51 +++++++++++++++++++++++++---------------
- 1 file changed, 32 insertions(+), 19 deletions(-)
-
---- a/drivers/i2c/busses/i2c-bcm2835.c
-+++ b/drivers/i2c/busses/i2c-bcm2835.c
-@@ -58,6 +58,7 @@ struct bcm2835_i2c_dev {
- 	void __iomem *regs;
- 	struct clk *clk;
- 	int irq;
-+	u32 bus_clk_rate;
- 	struct i2c_adapter adapter;
- 	struct completion completion;
- 	struct i2c_msg *curr_msg;
-@@ -78,6 +79,30 @@ static inline u32 bcm2835_i2c_readl(stru
- 	return readl(i2c_dev->regs + reg);
- }
- 
-+static int bcm2835_i2c_set_divider(struct bcm2835_i2c_dev *i2c_dev)
-+{
-+	u32 divider;
-+
-+	divider = DIV_ROUND_UP(clk_get_rate(i2c_dev->clk),
-+			       i2c_dev->bus_clk_rate);
-+	/*
-+	 * Per the datasheet, the register is always interpreted as an even
-+	 * number, by rounding down. In other words, the LSB is ignored. So,
-+	 * if the LSB is set, increment the divider to avoid any issue.
-+	 */
-+	if (divider & 1)
-+		divider++;
-+	if ((divider < BCM2835_I2C_CDIV_MIN) ||
-+	    (divider > BCM2835_I2C_CDIV_MAX)) {
-+		dev_err_ratelimited(i2c_dev->dev, "Invalid clock-frequency\n");
-+		return -EINVAL;
-+	}
-+
-+	bcm2835_i2c_writel(i2c_dev, BCM2835_I2C_DIV, divider);
-+
-+	return 0;
-+}
-+
- static void bcm2835_fill_txfifo(struct bcm2835_i2c_dev *i2c_dev)
- {
- 	u32 val;
-@@ -226,7 +251,7 @@ static int bcm2835_i2c_xfer(struct i2c_a
- {
- 	struct bcm2835_i2c_dev *i2c_dev = i2c_get_adapdata(adap);
- 	unsigned long time_left;
--	int i;
-+	int i, ret;
- 
- 	for (i = 0; i < (num - 1); i++)
- 		if (msgs[i].flags & I2C_M_RD) {
-@@ -235,6 +260,10 @@ static int bcm2835_i2c_xfer(struct i2c_a
- 			return -EOPNOTSUPP;
- 		}
- 
-+	ret = bcm2835_i2c_set_divider(i2c_dev);
-+	if (ret)
-+		return ret;
-+
- 	i2c_dev->curr_msg = msgs;
- 	i2c_dev->num_msgs = num;
- 	reinit_completion(&i2c_dev->completion);
-@@ -284,7 +313,6 @@ static int bcm2835_i2c_probe(struct plat
- {
- 	struct bcm2835_i2c_dev *i2c_dev;
- 	struct resource *mem, *irq;
--	u32 bus_clk_rate, divider;
- 	int ret;
- 	struct i2c_adapter *adap;
- 
-@@ -308,28 +336,13 @@ static int bcm2835_i2c_probe(struct plat
- 	}
- 
- 	ret = of_property_read_u32(pdev->dev.of_node, "clock-frequency",
--				   &bus_clk_rate);
-+				   &i2c_dev->bus_clk_rate);
- 	if (ret < 0) {
- 		dev_warn(&pdev->dev,
- 			 "Could not read clock-frequency property\n");
--		bus_clk_rate = 100000;
-+		i2c_dev->bus_clk_rate = 100000;
- 	}
- 
--	divider = DIV_ROUND_UP(clk_get_rate(i2c_dev->clk), bus_clk_rate);
--	/*
--	 * Per the datasheet, the register is always interpreted as an even
--	 * number, by rounding down. In other words, the LSB is ignored. So,
--	 * if the LSB is set, increment the divider to avoid any issue.
--	 */
--	if (divider & 1)
--		divider++;
--	if ((divider < BCM2835_I2C_CDIV_MIN) ||
--	    (divider > BCM2835_I2C_CDIV_MAX)) {
--		dev_err(&pdev->dev, "Invalid clock-frequency\n");
--		return -ENODEV;
--	}
--	bcm2835_i2c_writel(i2c_dev, BCM2835_I2C_DIV, divider);
--
- 	irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
- 	if (!irq) {
- 		dev_err(&pdev->dev, "No IRQ resource\n");