bcm27xx: update 6.1 patches from RPi foundation

[openwrt/staging/xback.git] / target / linux / bcm27xx / patches-6.1 / 950-1226-i2c-designware-Look-for-CNT-values-in-DT.patch

diff --git a/target/linux/bcm27xx/patches-6.1/950-1226-i2c-designware-Look-for-CNT-values-in-DT.patch b/target/linux/bcm27xx/patches-6.1/950-1226-i2c-designware-Look-for-CNT-values-in-DT.patch
deleted file mode 100644 (file)
index ccba16a..0000000
--- a/target/linux/bcm27xx/patches-6.1/950-1226-i2c-designware-Look-for-CNT-values-in-DT.patch
+++ /dev/null
@@ -1,57 +0,0 @@
-From 0a09088e24c013ef608b1bb79501ef890cefc767 Mon Sep 17 00:00:00 2001
-From: Phil Elwell <phil@raspberrypi.com>
-Date: Tue, 19 Dec 2023 11:16:25 +0000
-Subject: [PATCH] i2c: designware: Look for *CNT values in DT
-
-The i2c-designware driver supports reading precise timing values from
-ACPI, but the Device Tree support relies on a combination of standard
-rise and fall times and hard-coded minimum timings. The result of this
-is that it is difficult to get optimum timings, particularly given that
-the values are bus speed-specific and only one set can be stored in
-DT at a time.
-
-Add support for initialisation from DT that is similar to that for
-ACPI.
-
-Signed-off-by: Phil Elwell <phil@raspberrypi.com>
----
- drivers/i2c/busses/i2c-designware-platdrv.c | 18 ++++++++++++++++++
- 1 file changed, 18 insertions(+)
-
---- a/drivers/i2c/busses/i2c-designware-platdrv.c
-+++ b/drivers/i2c/busses/i2c-designware-platdrv.c
-@@ -132,9 +132,18 @@ static int mscc_twi_set_sda_hold_time(st
-       return 0;
- }
- 
-+static void dw_i2c_read_of_cnt(struct device_node *np, const char *name, u16 *pval)
-+{
-+      u32 val;
-+
-+      if (!of_property_read_u32(np, name, &val))
-+              *pval = (u16)val;
-+}
-+
- static int dw_i2c_of_configure(struct platform_device *pdev)
- {
-       struct dw_i2c_dev *dev = platform_get_drvdata(pdev);
-+      struct device_node *np = pdev->dev.of_node;
- 
-       switch (dev->flags & MODEL_MASK) {
-       case MODEL_MSCC_OCELOT:
-@@ -146,6 +155,15 @@ static int dw_i2c_of_configure(struct pl
-               break;
-       }
- 
-+      dw_i2c_read_of_cnt(np, "snps,ss_hcnt", &dev->ss_hcnt);
-+      dw_i2c_read_of_cnt(np, "snps,ss_lcnt", &dev->ss_lcnt);
-+      dw_i2c_read_of_cnt(np, "snps,fs_hcnt", &dev->fs_hcnt);
-+      dw_i2c_read_of_cnt(np, "snps,fs_lcnt", &dev->fs_lcnt);
-+      dw_i2c_read_of_cnt(np, "snps,fp_hcnt", &dev->fp_hcnt);
-+      dw_i2c_read_of_cnt(np, "snps,fp_lcnt", &dev->fp_lcnt);
-+      dw_i2c_read_of_cnt(np, "snps,hs_hcnt", &dev->hs_hcnt);
-+      dw_i2c_read_of_cnt(np, "snps,hs_lcnt", &dev->hs_lcnt);
-+
-       return 0;
- }
-