We need some sort of kconfig option to differentiate NS2 clock driver from being pulled in all the time.

On 15-10-15 12:48 PM, Jon Mason wrote:
The Broadcom Northstar 2 SoC is architected under the iProc
architecture. It has the following PLLs: GENPLL SCR, GENPLL SW,
LCPLL DDR, LCPLL Ports, all derived from an onboard crystal.

Signed-off-by: Jon Mason <jonma...@broadcom.com>
---
  drivers/clk/Makefile                |   2 +-
  drivers/clk/bcm/Makefile            |   1 +
  drivers/clk/bcm/clk-ns2.c           | 288 ++++++++++++++++++++++++++++++++++++
  include/dt-bindings/clock/bcm-ns2.h |  72 +++++++++
  4 files changed, 362 insertions(+), 1 deletion(-)
  create mode 100644 drivers/clk/bcm/clk-ns2.c
  create mode 100644 include/dt-bindings/clock/bcm-ns2.h

diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile
index d08b3e5..6124bd3 100644
--- a/drivers/clk/Makefile
+++ b/drivers/clk/Makefile
@@ -47,7 +47,7 @@ obj-$(CONFIG_COMMON_CLK_WM831X)               += clk-wm831x.o
  obj-$(CONFIG_COMMON_CLK_XGENE)                += clk-xgene.o
  obj-$(CONFIG_COMMON_CLK_PWM)          += clk-pwm.o
  obj-$(CONFIG_COMMON_CLK_AT91)         += at91/
-obj-$(CONFIG_ARCH_BCM)                 += bcm/
+obj-y                                  += bcm/
  obj-$(CONFIG_ARCH_BERLIN)             += berlin/
  obj-$(CONFIG_ARCH_HISI)                       += hisilicon/
  obj-$(CONFIG_ARCH_MXC)                        += imx/
diff --git a/drivers/clk/bcm/Makefile b/drivers/clk/bcm/Makefile
index e258b28..2d1cbc5 100644
--- a/drivers/clk/bcm/Makefile
+++ b/drivers/clk/bcm/Makefile
@@ -3,6 +3,7 @@ obj-$(CONFIG_CLK_BCM_KONA)      += clk-kona-setup.o
  obj-$(CONFIG_CLK_BCM_KONA)    += clk-bcm281xx.o
  obj-$(CONFIG_CLK_BCM_KONA)    += clk-bcm21664.o
  obj-$(CONFIG_COMMON_CLK_IPROC)        += clk-iproc-armpll.o clk-iproc-pll.o 
clk-iproc-asiu.o
+obj-$(CONFIG_COMMON_CLK_IPROC) += clk-ns2.o

NS2 code is dragged in for all IPROC SoCs. We need a config option for NS2 (CONFIG_ARCH_BCM_NS2) to avoid this (if Arnd allows this for ARMv8 processors... ?).

You can see below ARMv7 processors don't have this problem.

If not we need to add CONFIG_CLK_NS2.


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