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authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>2021-12-15 17:12:02 +0200
committerWolfram Sang <wsa@kernel.org>2021-12-16 22:14:02 +0100
commitc2d7fa2207d0df23bde6ef3fb4d56135f3d2977b (patch)
tree27dbcba0116866254bb36ea3ec27f5b451739acb /drivers/i2c
parentd52097010078c1844348dc0e467305e5f90fd317 (diff)
downloadlinux-c2d7fa2207d0df23bde6ef3fb4d56135f3d2977b.tar.bz2
i2c: designware-pci: Add a note about struct dw_scl_sda_cfg usage
Add a note about struct dw_scl_sda_cfg usage to discourage people of using this structure on new platforms. Instead they should try hard to put the needed information into firmware descriptions. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
Diffstat (limited to 'drivers/i2c')
-rw-r--r--drivers/i2c/busses/i2c-designware-pcidrv.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/i2c/busses/i2c-designware-pcidrv.c b/drivers/i2c/busses/i2c-designware-pcidrv.c
index 5b45941bcbdd..f49c41ba5647 100644
--- a/drivers/i2c/busses/i2c-designware-pcidrv.c
+++ b/drivers/i2c/busses/i2c-designware-pcidrv.c
@@ -38,6 +38,13 @@ enum dw_pci_ctl_id_t {
navi_amd,
};
+/*
+ * This is a legacy structure to describe the hardware counters
+ * to configure signal timings on the bus. For Device Tree platforms
+ * one should use the respective properties and for ACPI there is
+ * a set of ACPI methods that provide these counters. No new
+ * platform should use this structure.
+ */
struct dw_scl_sda_cfg {
u16 ss_hcnt;
u16 fs_hcnt;