[RFC PATCH v2 17/56] sandbox: Tidy up I2C options

[Simon Glass]

At present we enable the sandbox I2C driver for all builds. Add a separate
Kconfig option to control this, so that it can be disabled in TPL, where
it is not needed.

Signed-off-by: Simon Glass <sjg at chromium.org>
---

(no changes since v1)

 drivers/i2c/Kconfig | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/drivers/i2c/Kconfig b/drivers/i2c/Kconfig
index 347ba4d7822..70451e7c98b 100644
--- a/drivers/i2c/Kconfig
+++ b/drivers/i2c/Kconfig
@@ -47,6 +47,16 @@ config SPL_DM_I2C
 	  device (bus child) info is kept as parent platdata. The interface
 	  is defined in include/i2c.h.
 
+config TPL_DM_I2C
+	bool "Enable Driver Model for I2C drivers in TPL"
+	depends on TPL_DM && DM_I2C
+	help
+	  Enable driver model for I2C. The I2C uclass interface: probe, read,
+	  write and speed, is implemented with the bus drivers operations,
+	  which provide methods for bus setting and data transfer. Each chip
+	  device (bus child) info is kept as parent platdata. The interface
+	  is defined in include/i2c.h.
+
 config VPL_DM_I2C
 	bool "Enable Driver Model for I2C drivers in VPL"
 	depends on VPL_DM && DM_I2C
@@ -508,6 +518,16 @@ config SYS_I2C_ROCKCHIP
 config SYS_I2C_SANDBOX
 	bool "Sandbox I2C driver"
 	depends on SANDBOX && DM_I2C
+	default y
+	help
+	  Enable I2C support for sandbox. This is an emulation of a real I2C
+	  bus. Devices can be attached to the bus using the device tree
+	  which specifies the driver to use.  See sandbox.dts as an example.
+
+config SPL_SYS_I2C_SANDBOX
+	bool "Sandbox I2C driver (SPL)"
+	depends on SPL && SANDBOX && DM_I2C
+	default y
 	help
 	  Enable I2C support for sandbox. This is an emulation of a real I2C
 	  bus. Devices can be attached to the bus using the device tree
-- 
2.39.1.519.gcb327c4b5f-goog