* [PATCH 1/3] [POWERPC] FSL UPM: routines to manage FSL UPMs
2007-12-21 20:35 [PATCH 0/3] fsl upm, nand driver and MPC8360E-RDK as its first user Anton Vorontsov
@ 2007-12-21 20:39 ` Anton Vorontsov
2007-12-21 21:28 ` Olof Johansson
2007-12-23 2:24 ` Stephen Rothwell
2007-12-21 20:41 ` [PATCH 2/3] [POWERPC][NAND] FSL UPM NAND driver Anton Vorontsov
2007-12-21 20:41 ` [PATCH 3/3] [POWERPC] MPC8360E-RDK: add support for NAND on UPM Anton Vorontsov
2 siblings, 2 replies; 13+ messages in thread
From: Anton Vorontsov @ 2007-12-21 20:39 UTC (permalink / raw)
To: Kumar Gala; +Cc: linuxppc-dev
Here are few routines needed to manage FSL UPMs. It doesn't include
UPM programming, yet. So far u-boot manages to program everything.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
---
arch/powerpc/Kconfig | 3 +
arch/powerpc/sysdev/Makefile | 1 +
arch/powerpc/sysdev/fsl_upm.c | 65 +++++++++++++++++++++++++++++
include/asm-powerpc/fsl_upm.h | 90 +++++++++++++++++++++++++++++++++++++++++
4 files changed, 159 insertions(+), 0 deletions(-)
create mode 100644 arch/powerpc/sysdev/fsl_upm.c
create mode 100644 include/asm-powerpc/fsl_upm.h
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index a4fa173..aab8106 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -463,6 +463,9 @@ config FSL_PCI
bool
select PPC_INDIRECT_PCI
+config FSL_UPM
+ bool
+
# Yes MCA RS/6000s exist but Linux-PPC does not currently support any
config MCA
bool
diff --git a/arch/powerpc/sysdev/Makefile b/arch/powerpc/sysdev/Makefile
index 99a77d7..98dbfdd 100644
--- a/arch/powerpc/sysdev/Makefile
+++ b/arch/powerpc/sysdev/Makefile
@@ -12,6 +12,7 @@ obj-$(CONFIG_U3_DART) += dart_iommu.o
obj-$(CONFIG_MMIO_NVRAM) += mmio_nvram.o
obj-$(CONFIG_FSL_SOC) += fsl_soc.o
obj-$(CONFIG_FSL_PCI) += fsl_pci.o
+obj-$(CONFIG_FSL_UPM) += fsl_upm.o
obj-$(CONFIG_TSI108_BRIDGE) += tsi108_pci.o tsi108_dev.o
obj-$(CONFIG_QUICC_ENGINE) += qe_lib/
obj-$(CONFIG_PPC_BESTCOMM) += bestcomm/
diff --git a/arch/powerpc/sysdev/fsl_upm.c b/arch/powerpc/sysdev/fsl_upm.c
new file mode 100644
index 0000000..6e35bf4
--- /dev/null
+++ b/arch/powerpc/sysdev/fsl_upm.c
@@ -0,0 +1,65 @@
+/*
+ * Freescale UPM routines.
+ *
+ * Copyright (c) 2007 MontaVista Software, Inc.
+ * Copyright (c) 2007 Anton Vorontsov <avorontsov@ru.mvista.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/kernel.h>
+#include <linux/of.h>
+#include <asm/fsl_upm.h>
+
+spinlock_t upm_lock = __SPIN_LOCK_UNLOCKED(upm_lock);
+unsigned long upm_lock_flags;
+
+int fsl_upm_get_for(struct device_node *node, const char *name,
+ struct fsl_upm *upm)
+{
+ int ret;
+ struct device_node *lbus;
+ struct resource lbc_res;
+ ptrdiff_t mxmr_offs;
+
+ lbus = of_get_parent(node);
+ if (!lbus) {
+ pr_err("FSL UPM: can't get parent local bus node\n");
+ return -ENOENT;
+ }
+
+ ret = of_address_to_resource(lbus, 0, &lbc_res);
+ if (ret) {
+ pr_err("FSL UPM: can't get parent local bus base\n");
+ return -ENOMEM;
+ }
+
+ switch (name[0]) {
+ case 'A':
+ mxmr_offs = LBC_MAMR;
+ break;
+ case 'B':
+ mxmr_offs = LBC_MBMR;
+ break;
+ case 'C':
+ mxmr_offs = LBC_MCMR;
+ break;
+ default:
+ pr_err("FSL UPM: unknown UPM requested\n");
+ return -EINVAL;
+ break;
+ }
+
+ upm->lbc_base = ioremap_nocache(lbc_res.start,
+ lbc_res.end - lbc_res.start + 1);
+ if (!upm->lbc_base)
+ return -ENOMEM;
+
+ upm->mxmr = upm->lbc_base + mxmr_offs;
+ upm->mar = upm->lbc_base + LBC_MAR;
+
+ return 0;
+}
diff --git a/include/asm-powerpc/fsl_upm.h b/include/asm-powerpc/fsl_upm.h
new file mode 100644
index 0000000..fe5a5d9
--- /dev/null
+++ b/include/asm-powerpc/fsl_upm.h
@@ -0,0 +1,90 @@
+/*
+ * Freescale UPM routines.
+ *
+ * Copyright (c) 2007 MontaVista Software, Inc.
+ * Copyright (c) 2007 Anton Vorontsov <avorontsov@ru.mvista.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef __ASM_POWERPC_FSL_UPM
+#define __ASM_POWERPC_FSL_UPM
+
+#include <linux/spinlock.h>
+#include <asm/io.h>
+
+#define LBC_MAR 0x68
+#define LBC_MAMR 0x70
+#define LBC_MBMR 0x74
+#define LBC_MCMR 0x78
+
+#define LBC_MXMR_RUNP 0x30000000
+
+struct fsl_upm {
+ void __iomem *lbc_base;
+ void __iomem *mxmr;
+ void __iomem *mar;
+};
+
+extern spinlock_t upm_lock;
+extern unsigned long upm_lock_flags;
+
+extern int fsl_upm_get_for(struct device_node *node, const char *name,
+ struct fsl_upm *upm);
+
+static inline void fsl_upm_free(struct fsl_upm *upm)
+{
+ iounmap(upm->lbc_base);
+ upm->lbc_base = NULL;
+}
+
+static inline int fsl_upm_got(struct fsl_upm *upm)
+{
+ return !!upm->lbc_base;
+}
+
+static inline void fsl_upm_start_pattern(struct fsl_upm *upm, u32 pat_offset)
+{
+ spin_lock_irqsave(&upm_lock, upm_lock_flags);
+
+ out_be32(upm->mxmr, LBC_MXMR_RUNP | pat_offset);
+}
+
+static inline void fsl_upm_end_pattern(struct fsl_upm *upm)
+{
+ out_be32(upm->mxmr, 0x0);
+
+ while (in_be32(upm->mxmr) != 0x0)
+ cpu_relax();
+
+ spin_unlock_irqrestore(&upm_lock, upm_lock_flags);
+}
+
+static inline int fsl_upm_run_pattern(struct fsl_upm *upm,
+ void __iomem *io_base,
+ int width, u32 cmd)
+{
+ out_be32(upm->mar, cmd << (32 - width));
+
+ switch (width) {
+ case 8:
+ out_8(io_base, 0x0);
+ break;
+ case 16:
+ out_be16(io_base, 0x0);
+ break;
+ case 32:
+ out_be32(io_base, 0x0);
+ break;
+ default:
+ return -EINVAL;
+ break;
+ }
+
+ return 0;
+}
+
+#endif /* __ASM_POWERPC_FSL_UPM */
--
1.5.2.2
^ permalink raw reply related [flat|nested] 13+ messages in thread* [PATCH 2/3] [POWERPC][NAND] FSL UPM NAND driver
2007-12-21 20:35 [PATCH 0/3] fsl upm, nand driver and MPC8360E-RDK as its first user Anton Vorontsov
2007-12-21 20:39 ` [PATCH 1/3] [POWERPC] FSL UPM: routines to manage FSL UPMs Anton Vorontsov
@ 2007-12-21 20:41 ` Anton Vorontsov
2007-12-23 2:33 ` Stephen Rothwell
2007-12-21 20:41 ` [PATCH 3/3] [POWERPC] MPC8360E-RDK: add support for NAND on UPM Anton Vorontsov
2 siblings, 1 reply; 13+ messages in thread
From: Anton Vorontsov @ 2007-12-21 20:41 UTC (permalink / raw)
To: Kumar Gala; +Cc: linuxppc-dev, linux-mtd
It's using FSL UPM infrastructure. So far only 8 bit accessors
are implemented.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
---
drivers/mtd/nand/Kconfig | 7 +
drivers/mtd/nand/Makefile | 1 +
drivers/mtd/nand/fsl_upm.c | 313 ++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 321 insertions(+), 0 deletions(-)
create mode 100644 drivers/mtd/nand/fsl_upm.c
diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
index 246d451..91b448f 100644
--- a/drivers/mtd/nand/Kconfig
+++ b/drivers/mtd/nand/Kconfig
@@ -306,4 +306,11 @@ config MTD_ALAUDA
These two (and possibly other) Alauda-based cardreaders for
SmartMedia and xD allow raw flash access.
+config MTD_NAND_FSL_UPM
+ tristate "MTD driver for NAND on Freescale UPM"
+ depends on MTD_NAND && FSL_UPM && GENERIC_GPIO
+ help
+ Enables support for NAND Flash wired to Freescale processors'
+ localbus with pre-programmed User-Programmable Machine.
+
endif # MTD_NAND
diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile
index 3ad6c01..d553ea3 100644
--- a/drivers/mtd/nand/Makefile
+++ b/drivers/mtd/nand/Makefile
@@ -29,5 +29,6 @@ obj-$(CONFIG_MTD_NAND_CM_X270) += cmx270_nand.o
obj-$(CONFIG_MTD_NAND_BASLER_EXCITE) += excite_nandflash.o
obj-$(CONFIG_MTD_NAND_PLATFORM) += plat_nand.o
obj-$(CONFIG_MTD_ALAUDA) += alauda.o
+obj-$(CONFIG_MTD_NAND_FSL_UPM) += fsl_upm.o
nand-objs := nand_base.o nand_bbt.o
diff --git a/drivers/mtd/nand/fsl_upm.c b/drivers/mtd/nand/fsl_upm.c
new file mode 100644
index 0000000..ac26199
--- /dev/null
+++ b/drivers/mtd/nand/fsl_upm.c
@@ -0,0 +1,313 @@
+/*
+ * Freescale UPM NAND driver.
+ *
+ * Copyright (c) 2007 MontaVista Software, Inc.
+ * Copyright (c) 2007 Anton Vorontsov <avorontsov@ru.mvista.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mtd/nand.h>
+#include <linux/mtd/nand_ecc.h>
+#include <linux/mtd/partitions.h>
+#include <linux/mtd/mtd.h>
+#include <linux/of_platform.h>
+#include <linux/io.h>
+#include <asm/io.h>
+#include <asm/gpio.h>
+#include <asm/fsl_upm.h>
+
+struct upm_data {
+ struct device *dev;
+ struct mtd_info mtd;
+ struct nand_chip chip;
+ int last_ctrl;
+#ifdef CONFIG_MTD_PARTITIONS
+ struct mtd_partition *parts;
+#endif
+
+ struct fsl_upm upm;
+
+ int width;
+ int upm_addr_offset;
+ int upm_cmd_offset;
+ void __iomem *io_base;
+ int rnb_gpio;
+ const u32 *wait_pattern;
+ const u32 *wait_write;
+ int chip_delay;
+};
+
+#define to_upm_data(mtd) container_of(mtd, struct upm_data, mtd)
+
+static int upm_chip_ready(struct mtd_info *mtd)
+{
+ struct upm_data *ud = to_upm_data(mtd);
+
+ if (gpio_get_value(ud->rnb_gpio))
+ return 1;
+
+ dev_vdbg(ud->dev, "busy\n");
+ return 0;
+}
+
+static void upm_wait_rnb(struct upm_data *ud)
+{
+ int cnt = 1000000;
+
+ if (ud->rnb_gpio >= 0) {
+ while (--cnt && !upm_chip_ready(&ud->mtd))
+ cpu_relax();
+ }
+
+ if (!cnt)
+ dev_err(ud->dev, "tired waiting for RNB\n");
+}
+
+static void upm_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl)
+{
+ struct upm_data *ud = to_upm_data(mtd);
+
+ if (!(ctrl & ud->last_ctrl)) {
+ fsl_upm_end_pattern(&ud->upm);
+
+ if (cmd == NAND_CMD_NONE)
+ return;
+
+ ud->last_ctrl = ctrl & (NAND_ALE | NAND_CLE);
+ }
+
+ if (ctrl & NAND_CTRL_CHANGE) {
+ if (ctrl & NAND_ALE)
+ fsl_upm_start_pattern(&ud->upm, ud->upm_addr_offset);
+ else if (ctrl & NAND_CLE)
+ fsl_upm_start_pattern(&ud->upm, ud->upm_cmd_offset);
+ }
+
+ fsl_upm_run_pattern(&ud->upm, ud->io_base, ud->width, cmd);
+
+ if (ud->wait_pattern)
+ upm_wait_rnb(ud);
+}
+
+static uint8_t upm_read_byte(struct mtd_info *mtd)
+{
+ struct upm_data *ud = to_upm_data(mtd);
+
+ return in_8(ud->chip.IO_ADDR_R);
+}
+
+static void upm_read_buf(struct mtd_info *mtd, uint8_t *buf, int len)
+{
+ struct upm_data *ud = to_upm_data(mtd);
+ int i;
+
+ for (i = 0; i < len; i++)
+ buf[i] = in_8(ud->chip.IO_ADDR_R);
+}
+
+static void upm_write_buf(struct mtd_info *mtd, const uint8_t *buf, int len)
+{
+ struct upm_data *ud = to_upm_data(mtd);
+ int i;
+
+ for (i = 0; i < len; i++) {
+ out_8(ud->chip.IO_ADDR_W, buf[i]);
+ if (ud->wait_write)
+ upm_wait_rnb(ud);
+ }
+}
+
+static int __devinit upm_chip_init(struct upm_data *ud)
+{
+ int ret;
+#ifdef CONFIG_MTD_PARTITIONS
+ static const char *part_types[] = { "cmdlinepart", NULL, };
+#endif
+
+ ud->chip.IO_ADDR_R = ud->io_base;
+ ud->chip.IO_ADDR_W = ud->io_base;
+ ud->chip.cmd_ctrl = upm_cmd_ctrl;
+ ud->chip.chip_delay = ud->chip_delay;
+ ud->chip.read_byte = upm_read_byte;
+ ud->chip.read_buf = upm_read_buf;
+ ud->chip.write_buf = upm_write_buf;
+ ud->chip.ecc.mode = NAND_ECC_SOFT;
+
+ if (ud->rnb_gpio >= 0)
+ ud->chip.dev_ready = upm_chip_ready;
+
+ ud->mtd.priv = &ud->chip;
+ ud->mtd.owner = THIS_MODULE;
+
+ ret = nand_scan(&ud->mtd, 1);
+ if (ret)
+ return ret;
+
+ ud->mtd.name = ud->dev->bus_id;
+
+#ifdef CONFIG_MTD_PARTITIONS
+ ret = parse_mtd_partitions(&ud->mtd, part_types, &ud->parts, 0);
+ if (ret > 0)
+ return add_mtd_partitions(&ud->mtd, ud->parts, ret);
+#endif
+ return add_mtd_device(&ud->mtd);
+}
+
+static int __devinit upm_chip_probe(struct of_device *ofdev,
+ const struct of_device_id *ofid)
+{
+ struct upm_data *ud;
+ struct resource io_res;
+ const u32 *prop;
+ int ret;
+ int size;
+
+ ud = kzalloc(sizeof(*ud), GFP_KERNEL);
+ if (!ud)
+ return -ENOMEM;
+
+ ret = of_address_to_resource(ofdev->node, 0, &io_res);
+ if (ret) {
+ dev_err(&ofdev->dev, "can't get IO base\n");
+ goto err;
+ }
+
+ prop = of_get_property(ofdev->node, "width", &size);
+ if (!prop || size != sizeof(u32)) {
+ dev_err(&ofdev->dev, "can't get chip width\n");
+ goto err;
+ }
+ ud->width = *prop * 8;
+
+ prop = of_get_property(ofdev->node, "upm", &size);
+ if (!prop || size < 1) {
+ dev_err(&ofdev->dev, "can't get UPM to use\n");
+ ret = -EINVAL;
+ goto err;
+ }
+
+ ret = fsl_upm_get_for(ofdev->node, (const char *)prop, &ud->upm);
+ if (ret) {
+ dev_err(&ofdev->dev, "can't get FSL UPM\n");
+ goto err;
+ }
+
+ prop = of_get_property(ofdev->node, "upm-addr-offset", &size);
+ if (!prop || size != sizeof(u32)) {
+ dev_err(&ofdev->dev, "can't get UPM address offset\n");
+ ret = -EINVAL;
+ goto err;
+ }
+ ud->upm_addr_offset = *prop;
+
+ prop = of_get_property(ofdev->node, "upm-cmd-offset", &size);
+ if (!prop || size != sizeof(u32)) {
+ dev_err(&ofdev->dev, "can't get UPM command offset\n");
+ ret = -EINVAL;
+ goto err;
+ }
+ ud->upm_cmd_offset = *prop;
+
+ ud->rnb_gpio = of_get_gpio(ofdev->node, 0);
+ if (ud->rnb_gpio >= 0) {
+ ret = gpio_request(ud->rnb_gpio, ofdev->dev.bus_id);
+ if (ret) {
+ dev_err(&ofdev->dev, "can't request RNB gpio\n");
+ goto err;
+ }
+ gpio_direction_input(ud->rnb_gpio);
+ } else if (ud->rnb_gpio == -EINVAL) {
+ dev_err(&ofdev->dev, "specified RNB gpio is invalid\n");
+ goto err;
+ }
+
+ ud->io_base = devm_ioremap_nocache(&ofdev->dev, io_res.start,
+ io_res.end - io_res.start + 1);
+ if (!ud->io_base) {
+ ret = -ENOMEM;
+ goto err;
+ }
+
+ ud->dev = &ofdev->dev;
+ ud->last_ctrl = NAND_CLE;
+ ud->wait_pattern = of_get_property(ofdev->node, "wait-pattern", NULL);
+ ud->wait_write = of_get_property(ofdev->node, "wait-write", NULL);
+
+ prop = of_get_property(ofdev->node, "chip-delay", NULL);
+ if (prop)
+ ud->chip_delay = *prop;
+ else
+ ud->chip_delay = 50;
+
+ ret = upm_chip_init(ud);
+ if (ret)
+ goto err;
+
+ dev_set_drvdata(&ofdev->dev, ud);
+
+ return 0;
+
+err:
+ if (fsl_upm_got(&ud->upm))
+ fsl_upm_free(&ud->upm);
+
+ if (ud->rnb_gpio >= 0)
+ gpio_free(ud->rnb_gpio);
+
+ kfree(ud);
+
+ return ret;
+}
+
+static int __devexit upm_chip_remove(struct of_device *ofdev)
+{
+ struct upm_data *ud = dev_get_drvdata(&ofdev->dev);
+
+ nand_release(&ud->mtd);
+
+ fsl_upm_free(&ud->upm);
+
+ if (ud->rnb_gpio >= 0)
+ gpio_free(ud->rnb_gpio);
+
+ kfree(ud);
+
+ return 0;
+}
+
+static struct of_device_id of_upm_nand_match[] = {
+ { .compatible = "fsl,upm-nand" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, of_upm_nand_match);
+
+static struct of_platform_driver of_upm_chip_driver = {
+ .name = "fsl_upm_nand",
+ .match_table = of_upm_nand_match,
+ .probe = upm_chip_probe,
+ .remove = __devexit_p(upm_chip_remove),
+};
+
+static int __init upm_nand_init(void)
+{
+ return of_register_platform_driver(&of_upm_chip_driver);
+}
+
+static void __exit upm_nand_exit(void)
+{
+ of_unregister_platform_driver(&of_upm_chip_driver);
+}
+
+module_init(upm_nand_init);
+module_exit(upm_nand_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Anton Vorontsov <avorontsov@ru.mvista.com>");
+MODULE_DESCRIPTION("Driver for NAND chips working through Freescale "
+ "LocalBus User-Programmable Machine");
--
1.5.2.2
^ permalink raw reply related [flat|nested] 13+ messages in thread* [PATCH 3/3] [POWERPC] MPC8360E-RDK: add support for NAND on UPM
2007-12-21 20:35 [PATCH 0/3] fsl upm, nand driver and MPC8360E-RDK as its first user Anton Vorontsov
2007-12-21 20:39 ` [PATCH 1/3] [POWERPC] FSL UPM: routines to manage FSL UPMs Anton Vorontsov
2007-12-21 20:41 ` [PATCH 2/3] [POWERPC][NAND] FSL UPM NAND driver Anton Vorontsov
@ 2007-12-21 20:41 ` Anton Vorontsov
2 siblings, 0 replies; 13+ messages in thread
From: Anton Vorontsov @ 2007-12-21 20:41 UTC (permalink / raw)
To: Kumar Gala; +Cc: linuxppc-dev
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
---
arch/powerpc/boot/dts/mpc836x_rdk.dts | 19 +++++++++++++++++--
arch/powerpc/platforms/83xx/Kconfig | 1 +
2 files changed, 18 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/boot/dts/mpc836x_rdk.dts b/arch/powerpc/boot/dts/mpc836x_rdk.dts
index 3f8d2b0..43420b1 100644
--- a/arch/powerpc/boot/dts/mpc836x_rdk.dts
+++ b/arch/powerpc/boot/dts/mpc836x_rdk.dts
@@ -126,7 +126,8 @@
reg = <0x700 0x100>;
};
- par_io@1400 {
+ qe_pio: par_io@1400 {
+ #gpio-cells = <2>;
compatible = "fsl,qe-pario";
reg = <0x1400 0x100>;
num-ports = <7>;
@@ -292,7 +293,8 @@
compatible = "fsl,mpc8360-localbus",
"fsl,pq2pro-localbus";
reg = <0xe0005000 0xd8>;
- ranges = <0 0 0xff800000 0x800000>;
+ ranges = <0 0 0xff800000 0x800000
+ 1 0 0x60000000 0x001000>;
nor-flash@0,0 {
compatible = "intel,PC28F640P30T85", "cfi-flash";
@@ -300,6 +302,19 @@
bank-width = <2>;
device-width = <1>;
};
+
+ nand-flash@1,0 {
+ compatible = "stmicro,NAND512W3A2BN6E", "fsl,upm-nand";
+ reg = <1 0 1>;
+ width = <1>;
+ upm = "A";
+ upm-addr-offset = <16>;
+ upm-cmd-offset = <8>;
+ gpios = <4 18>;
+ gpio-parent = <&qe_pio>;
+ wait-pattern;
+ wait-write;
+ };
};
pci0: pci@e0008500 {
diff --git a/arch/powerpc/platforms/83xx/Kconfig b/arch/powerpc/platforms/83xx/Kconfig
index 0d5a87c..723a8fe 100644
--- a/arch/powerpc/platforms/83xx/Kconfig
+++ b/arch/powerpc/platforms/83xx/Kconfig
@@ -88,6 +88,7 @@ config PPC_MPC836x
bool
select PPC_UDBG_16550
select PPC_INDIRECT_PCI
+ select FSL_UPM
default y if MPC836x_MDS || MPC836x_RDK
config PPC_MPC837x
--
1.5.2.2
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