[U-Boot] [PATCH 06/13] pinctrl: Remove DM_FLAG_PRE_RELOC flag in various drivers

[Bin Meng]

When a driver declares DM_FLAG_PRE_RELOC flag, it wishes to be
bound before relocation. However due to a bug in the DM core,
the flag only takes effect when devices are statically declared
via U_BOOT_DEVICE(). This bug has been fixed recently by commit
"dm: core: Respect drivers with the DM_FLAG_PRE_RELOC flag in
lists_bind_fdt()", but with the fix, it has a side effect that
all existing drivers that declared DM_FLAG_PRE_RELOC flag will
be bound before relocation now. This may expose potential boot
failure on some boards due to insufficient memory during the
pre-relocation stage.

To mitigate this potential impact, the following changes are
implemented:

- Remove DM_FLAG_PRE_RELOC flag in the driver, if the driver
  only supports configuration from device tree (OF_CONTROL)
- Keep DM_FLAG_PRE_RELOC flag in the driver only if the device
  is statically declared via U_BOOT_DEVICE()
- Surround DM_FLAG_PRE_RELOC flag with OF_CONTROL check, for
  drivers that support both statically declared devices and
  configuration from device tree

Signed-off-by: Bin Meng <bmeng.cn at gmail.com>
---

 drivers/pinctrl/broadcom/pinctrl-bcm283x.c       | 2 ++
 drivers/pinctrl/exynos/pinctrl-exynos7420.c      | 1 -
 drivers/pinctrl/nxp/pinctrl-imx5.c               | 2 ++
 drivers/pinctrl/nxp/pinctrl-imx6.c               | 2 ++
 drivers/pinctrl/nxp/pinctrl-imx7.c               | 2 ++
 drivers/pinctrl/nxp/pinctrl-imx7ulp.c            | 2 ++
 drivers/pinctrl/pinctrl-single.c                 | 1 -
 drivers/pinctrl/uniphier/pinctrl-uniphier-pro4.c | 2 ++
 drivers/pinctrl/uniphier/pinctrl-uniphier-pro5.c | 2 ++
 9 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/drivers/pinctrl/broadcom/pinctrl-bcm283x.c b/drivers/pinctrl/broadcom/pinctrl-bcm283x.c
index 891b4c2..3be080d 100644
--- a/drivers/pinctrl/broadcom/pinctrl-bcm283x.c
+++ b/drivers/pinctrl/broadcom/pinctrl-bcm283x.c
@@ -148,5 +148,7 @@ U_BOOT_DRIVER(pinctrl_bcm283x) = {
 	.priv_auto_alloc_size = sizeof(struct bcm283x_pinctrl_priv),
 	.ops		= &bcm283x_pinctrl_ops,
 	.probe		= bcm283x_pinctl_probe,
+#if !CONFIG_IS_ENABLED(OF_CONTROL)
 	.flags		= DM_FLAG_PRE_RELOC,
+#endif
 };
diff --git a/drivers/pinctrl/exynos/pinctrl-exynos7420.c b/drivers/pinctrl/exynos/pinctrl-exynos7420.c
index cb5975b..ff6d6c4 100644
--- a/drivers/pinctrl/exynos/pinctrl-exynos7420.c
+++ b/drivers/pinctrl/exynos/pinctrl-exynos7420.c
@@ -113,5 +113,4 @@ U_BOOT_DRIVER(pinctrl_exynos7420) = {
 	.priv_auto_alloc_size = sizeof(struct exynos_pinctrl_priv),
 	.ops		= &exynos7420_pinctrl_ops,
 	.probe		= exynos_pinctrl_probe,
-	.flags		= DM_FLAG_PRE_RELOC
 };
diff --git a/drivers/pinctrl/nxp/pinctrl-imx5.c b/drivers/pinctrl/nxp/pinctrl-imx5.c
index 5d17380..4e831b6 100644
--- a/drivers/pinctrl/nxp/pinctrl-imx5.c
+++ b/drivers/pinctrl/nxp/pinctrl-imx5.c
@@ -40,5 +40,7 @@ U_BOOT_DRIVER(imx5_pinctrl) = {
 	.remove = imx_pinctrl_remove,
 	.priv_auto_alloc_size = sizeof(struct imx_pinctrl_priv),
 	.ops = &imx_pinctrl_ops,
+#if !CONFIG_IS_ENABLED(OF_CONTROL)
 	.flags = DM_FLAG_PRE_RELOC,
+#endif
 };
diff --git a/drivers/pinctrl/nxp/pinctrl-imx6.c b/drivers/pinctrl/nxp/pinctrl-imx6.c
index e63ecbd..d7c95bb 100644
--- a/drivers/pinctrl/nxp/pinctrl-imx6.c
+++ b/drivers/pinctrl/nxp/pinctrl-imx6.c
@@ -49,5 +49,7 @@ U_BOOT_DRIVER(imx6_pinctrl) = {
 	.remove = imx_pinctrl_remove,
 	.priv_auto_alloc_size = sizeof(struct imx_pinctrl_priv),
 	.ops = &imx_pinctrl_ops,
+#if !CONFIG_IS_ENABLED(OF_CONTROL)
 	.flags = DM_FLAG_PRE_RELOC,
+#endif
 };
diff --git a/drivers/pinctrl/nxp/pinctrl-imx7.c b/drivers/pinctrl/nxp/pinctrl-imx7.c
index 769d428..8776fd9 100644
--- a/drivers/pinctrl/nxp/pinctrl-imx7.c
+++ b/drivers/pinctrl/nxp/pinctrl-imx7.c
@@ -37,5 +37,7 @@ U_BOOT_DRIVER(imx7_pinctrl) = {
 	.remove = imx_pinctrl_remove,
 	.priv_auto_alloc_size = sizeof(struct imx_pinctrl_priv),
 	.ops = &imx_pinctrl_ops,
+#if !CONFIG_IS_ENABLED(OF_CONTROL)
 	.flags = DM_FLAG_PRE_RELOC,
+#endif
 };
diff --git a/drivers/pinctrl/nxp/pinctrl-imx7ulp.c b/drivers/pinctrl/nxp/pinctrl-imx7ulp.c
index 598bbfa..d778f82 100644
--- a/drivers/pinctrl/nxp/pinctrl-imx7ulp.c
+++ b/drivers/pinctrl/nxp/pinctrl-imx7ulp.c
@@ -41,5 +41,7 @@ U_BOOT_DRIVER(imx7ulp_pinctrl) = {
 	.remove = imx_pinctrl_remove,
 	.priv_auto_alloc_size = sizeof(struct imx_pinctrl_priv),
 	.ops = &imx_pinctrl_ops,
+#if !CONFIG_IS_ENABLED(OF_CONTROL)
 	.flags = DM_FLAG_PRE_RELOC,
+#endif
 };
diff --git a/drivers/pinctrl/pinctrl-single.c b/drivers/pinctrl/pinctrl-single.c
index d80c6ed..9dec88c 100644
--- a/drivers/pinctrl/pinctrl-single.c
+++ b/drivers/pinctrl/pinctrl-single.c
@@ -136,7 +136,6 @@ U_BOOT_DRIVER(single_pinctrl) = {
 	.id = UCLASS_PINCTRL,
 	.of_match = single_pinctrl_match,
 	.ops = &single_pinctrl_ops,
-	.flags = DM_FLAG_PRE_RELOC,
 	.platdata_auto_alloc_size = sizeof(struct single_pdata),
 	.ofdata_to_platdata = single_ofdata_to_platdata,
 };
diff --git a/drivers/pinctrl/uniphier/pinctrl-uniphier-pro4.c b/drivers/pinctrl/uniphier/pinctrl-uniphier-pro4.c
index a1da90b..eb5978a 100644
--- a/drivers/pinctrl/uniphier/pinctrl-uniphier-pro4.c
+++ b/drivers/pinctrl/uniphier/pinctrl-uniphier-pro4.c
@@ -171,5 +171,7 @@ U_BOOT_DRIVER(uniphier_pro4_pinctrl) = {
 	.probe = uniphier_pro4_pinctrl_probe,
 	.priv_auto_alloc_size = sizeof(struct uniphier_pinctrl_priv),
 	.ops = &uniphier_pinctrl_ops,
+#if !CONFIG_IS_ENABLED(OF_CONTROL)
 	.flags = DM_FLAG_PRE_RELOC,
+#endif
 };
diff --git a/drivers/pinctrl/uniphier/pinctrl-uniphier-pro5.c b/drivers/pinctrl/uniphier/pinctrl-uniphier-pro5.c
index 0ba2052..685d8be 100644
--- a/drivers/pinctrl/uniphier/pinctrl-uniphier-pro5.c
+++ b/drivers/pinctrl/uniphier/pinctrl-uniphier-pro5.c
@@ -153,5 +153,7 @@ U_BOOT_DRIVER(uniphier_pro5_pinctrl) = {
 	.probe = uniphier_pro5_pinctrl_probe,
 	.priv_auto_alloc_size = sizeof(struct uniphier_pinctrl_priv),
 	.ops = &uniphier_pinctrl_ops,
+#if !CONFIG_IS_ENABLED(OF_CONTROL)
 	.flags = DM_FLAG_PRE_RELOC,
+#endif
 };
-- 
2.7.4