[PATCH v3 05/10] clk: scmi: Add Kconfig option for SPL

[Jonas Karlman]

Building U-Boot SPL with CLK_SCMI and SCMI_FIRMWARE Kconfig options
enabled and SPL_FIRMWARE disabled result in the following error.

  drivers/clk/clk_scmi.o: in function `scmi_clk_gate':
  drivers/clk/clk_scmi.c:84: undefined reference to `devm_scmi_process_msg'
  drivers/clk/clk_scmi.c:88: undefined reference to `scmi_to_linux_errno'
  drivers/clk/clk_scmi.o: in function `scmi_clk_get_rate':
  drivers/clk/clk_scmi.c:113: undefined reference to `devm_scmi_process_msg'
  drivers/clk/clk_scmi.c:117: undefined reference to `scmi_to_linux_errno'
  drivers/clk/clk_scmi.o: in function `scmi_clk_set_rate':
  drivers/clk/clk_scmi.c:139: undefined reference to `devm_scmi_process_msg'
  drivers/clk/clk_scmi.c:143: undefined reference to `scmi_to_linux_errno'
  drivers/clk/clk_scmi.o: in function `scmi_clk_probe':
  drivers/clk/clk_scmi.c:157: undefined reference to `devm_scmi_of_get_channel'
  make[1]: *** [scripts/Makefile.spl:527: spl/u-boot-spl] Error 1
  make: *** [Makefile:2043: spl/u-boot-spl] Error 2

Add Kconfig option so that CLK_SCMI can be disabled in SPL to fix this.

Signed-off-by: Jonas Karlman <jonas at kwiboo.se>
Reviewed-by: Kever Yang <kever.yang at rock-chips.com>
---
v3:
- Patch picked from [1]
- Collect r-b tag

[1] https://patchwork.ozlabs.org/project/uboot/patch/20230317191638.2558279-2-jonas@kwiboo.se/

 drivers/clk/Kconfig                       | 8 ++++++++
 drivers/clk/Makefile                      | 2 +-
 drivers/firmware/scmi/scmi_agent-uclass.c | 2 +-
 3 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig
index 42280cbf83a7..19269c7fd4d6 100644
--- a/drivers/clk/Kconfig
+++ b/drivers/clk/Kconfig
@@ -166,6 +166,14 @@ config CLK_SCMI
 	  by a SCMI agent based on SCMI clock protocol communication
 	  with a SCMI server.
 
+config SPL_CLK_SCMI
+	bool "Enable SCMI clock driver in SPL"
+	depends on SCMI_FIRMWARE && SPL_FIRMWARE
+	help
+	  Enable this option if you want to support clock devices exposed
+	  by a SCMI agent based on SCMI clock protocol communication
+	  with a SCMI server in SPL.
+
 config CLK_HSDK
 	bool "Enable cgu clock driver for HSDK boards"
 	depends on CLK && TARGET_HSDK
diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile
index c274cda77c6a..c1347774b58c 100644
--- a/drivers/clk/Makefile
+++ b/drivers/clk/Makefile
@@ -39,7 +39,7 @@ obj-$(CONFIG_CLK_MVEBU) += mvebu/
 obj-$(CONFIG_CLK_OCTEON) += clk_octeon.o
 obj-$(CONFIG_CLK_OWL) += owl/
 obj-$(CONFIG_CLK_RENESAS) += renesas/
-obj-$(CONFIG_CLK_SCMI) += clk_scmi.o
+obj-$(CONFIG_$(SPL_TPL_)CLK_SCMI) += clk_scmi.o
 obj-$(CONFIG_CLK_SIFIVE) += sifive/
 obj-$(CONFIG_CLK_UNIPHIER) += uniphier/
 obj-$(CONFIG_CLK_VERSACLOCK) += clk_versaclock.o
diff --git a/drivers/firmware/scmi/scmi_agent-uclass.c b/drivers/firmware/scmi/scmi_agent-uclass.c
index 9a32678617d7..54d563d929b8 100644
--- a/drivers/firmware/scmi/scmi_agent-uclass.c
+++ b/drivers/firmware/scmi/scmi_agent-uclass.c
@@ -75,7 +75,7 @@ static int scmi_bind_protocols(struct udevice *dev)
 		name = ofnode_get_name(node);
 		switch (protocol_id) {
 		case SCMI_PROTOCOL_ID_CLOCK:
-			if (IS_ENABLED(CONFIG_CLK_SCMI))
+			if (CONFIG_IS_ENABLED(CLK_SCMI))
 				drv = DM_DRIVER_GET(scmi_clock);
 			break;
 		case SCMI_PROTOCOL_ID_RESET_DOMAIN:
-- 
2.40.0