[U-Boot] [PATCH 0/8] dm: Various fixes in dm core/cpu/timer
This fixed several issues identified in dm core/cpu/timer codes.
The issues were found during RISC-V cpu/timer driver development for QEMU RISC-V port.
This series is available at u-boot-x86/dm-fixes for testing.
Bin Meng (8): dm: cpu: Fix print_cpuinfo() output cpu: mpc83xx: Remove unnecessary characters in the description string dm: util: Add a livetree equivalent API of dm_fdt_pre_reloc() dm: core: Respect drivers with the DM_FLAG_PRE_RELOC flag in lists_bind_fdt() dm: Correct pre_reloc_only parameter description in several APIs' comments dm: core: Mirror the chosen node parse logic in the livetree scanning test: dm: core: Add a test case for driver marked with DM_FLAG_PRE_RELOC flag timer: Sort Kconfig driver entries
arch/sandbox/dts/test.dts | 4 ++ common/board_f.c | 2 +- drivers/core/lists.c | 9 +++- drivers/core/root.c | 20 +++++--- drivers/core/util.c | 25 ++++++++++ drivers/cpu/mpc83xx_cpu.c | 2 +- drivers/serial/serial-uclass.c | 2 +- drivers/timer/Kconfig | 110 ++++++++++++++++++++--------------------- drivers/timer/timer-uclass.c | 2 +- include/dm/device-internal.h | 4 +- include/dm/lists.h | 9 ++-- include/dm/root.h | 17 ++++--- include/dm/util.h | 27 +++++++++- test/dm/bus.c | 2 +- test/dm/test-fdt.c | 29 +++++++++-- 15 files changed, 179 insertions(+), 85 deletions(-)
Current output of print_cpuinfo() does not have an ending '\n', neither have a leading 'CPU:' like others. However previously this used to work on QEMU x86 targets.
It turns out commit c0434407b595 introduced a unified DM version of print_cpuinfo() that exposed such issue.
Fixes: c0434407b595 ("board_f: Use static print_cpuinfo if CONFIG_CPU is active") Signed-off-by: Bin Meng bmeng.cn@gmail.com ---
common/board_f.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/common/board_f.c b/common/board_f.c index 213d044..96503ff 100644 --- a/common/board_f.c +++ b/common/board_f.c @@ -187,7 +187,7 @@ static int print_cpuinfo(void) return ret; }
- printf("%s", desc); + printf("CPU: %s\n", desc);
return 0; }
The description string should not contain unnecessary characters, like the ending '\n' or the leading 'CPU:'.
Signed-off-by: Bin Meng bmeng.cn@gmail.com ---
drivers/cpu/mpc83xx_cpu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/cpu/mpc83xx_cpu.c b/drivers/cpu/mpc83xx_cpu.c index 31717af..7bc86bf 100644 --- a/drivers/cpu/mpc83xx_cpu.c +++ b/drivers/cpu/mpc83xx_cpu.c @@ -262,7 +262,7 @@ static int mpc83xx_cpu_get_desc(struct udevice *dev, char *buf, int size) determine_cpu_data(dev);
snprintf(buf, size, - "CPU: %s, MPC%s%s%s, Rev: %d.%d at %s MHz, CSB: %s MHz\n", + "%s, MPC%s%s%s, Rev: %d.%d at %s MHz, CSB: %s MHz", e300_names[priv->e300_type], cpu_type_names[priv->type], priv->is_e_processor ? "E" : "",
This adds a new API dm_ofnode_pre_reloc(), a livetree equivalent API of dm_fdt_pre_reloc().
Signed-off-by: Bin Meng bmeng.cn@gmail.com ---
drivers/core/util.c | 25 +++++++++++++++++++++++++ include/dm/util.h | 27 ++++++++++++++++++++++++++- 2 files changed, 51 insertions(+), 1 deletion(-)
diff --git a/drivers/core/util.c b/drivers/core/util.c index 451d476..27a6848 100644 --- a/drivers/core/util.c +++ b/drivers/core/util.c @@ -4,6 +4,7 @@ */
#include <common.h> +#include <dm/ofnode.h> #include <dm/util.h> #include <linux/libfdt.h> #include <vsprintf.h> @@ -53,3 +54,27 @@ bool dm_fdt_pre_reloc(const void *blob, int offset)
return false; } + +bool dm_ofnode_pre_reloc(ofnode node) +{ + if (ofnode_read_bool(node, "u-boot,dm-pre-reloc")) + return true; + +#ifdef CONFIG_TPL_BUILD + if (ofnode_read_bool(node, "u-boot,dm-tpl")) + return true; +#elif defined(CONFIG_SPL_BUILD) + if (ofnode_read_bool(node, "u-boot,dm-spl")) + return true; +#else + /* + * In regular builds individual spl and tpl handling both + * count as handled pre-relocation for later second init. + */ + if (ofnode_read_bool(node, "u-boot,dm-spl") || + ofnode_read_bool(node, "u-boot,dm-tpl")) + return true; +#endif + + return false; +} diff --git a/include/dm/util.h b/include/dm/util.h index 898822e..9ff6531 100644 --- a/include/dm/util.h +++ b/include/dm/util.h @@ -55,7 +55,7 @@ static inline void dm_dump_devres(void) * There are 3 settings currently in use * - * - u-boot,dm-pre-reloc: legacy and indicates any of TPL or SPL - * Existing platforms only use it to indicate nodes needee in + * Existing platforms only use it to indicate nodes needed in * SPL. Should probably be replaced by u-boot,dm-spl for * existing platforms. * @blob: devicetree @@ -65,4 +65,29 @@ static inline void dm_dump_devres(void) */ bool dm_fdt_pre_reloc(const void *blob, int offset);
+/** + * Check if an of node should be or was bound before relocation. + * + * Devicetree nodes can be marked as needed to be bound + * in the loader stages via special devicetree properties. + * + * Before relocation this function can be used to check if nodes + * are required in either SPL or TPL stages. + * + * After relocation and jumping into the real U-Boot binary + * it is possible to determine if a node was bound in one of + * SPL/TPL stages. + * + * There are 3 settings currently in use + * - + * - u-boot,dm-pre-reloc: legacy and indicates any of TPL or SPL + * Existing platforms only use it to indicate nodes needed in + * SPL. Should probably be replaced by u-boot,dm-spl for + * existing platforms. + * @node: of node + * + * Returns true if node is needed in SPL/TL, false otherwise. + */ +bool dm_ofnode_pre_reloc(ofnode node); + #endif
Currently the comments of several APIs (eg: dm_init_and_scan()) say:
@pre_reloc_only: If true, bind only drivers with the DM_FLAG_PRE_RELOC flag. If false bind all drivers.
The 'Pre-Relocation Support' chapter in doc/driver-model/README.txt documents the same.
However the implementation only checks these special device tree properties without checking the driver flag at all. This updates lists_bind_fdt() to consider both scenarios.
Signed-off-by: Bin Meng bmeng.cn@gmail.com ---
drivers/core/lists.c | 9 ++++++++- drivers/core/root.c | 12 ++++-------- drivers/serial/serial-uclass.c | 2 +- drivers/timer/timer-uclass.c | 2 +- include/dm/lists.h | 5 ++++- 5 files changed, 18 insertions(+), 12 deletions(-)
diff --git a/drivers/core/lists.c b/drivers/core/lists.c index a167726..a1f8284 100644 --- a/drivers/core/lists.c +++ b/drivers/core/lists.c @@ -122,7 +122,8 @@ static int driver_check_compatible(const struct udevice_id *of_match, return -ENOENT; }
-int lists_bind_fdt(struct udevice *parent, ofnode node, struct udevice **devp) +int lists_bind_fdt(struct udevice *parent, ofnode node, struct udevice **devp, + bool pre_reloc_only) { struct driver *driver = ll_entry_start(struct driver, driver); const int n_ents = ll_entry_count(struct driver, driver); @@ -171,6 +172,12 @@ int lists_bind_fdt(struct udevice *parent, ofnode node, struct udevice **devp) if (entry == driver + n_ents) continue;
+ if (pre_reloc_only) { + if (!dm_ofnode_pre_reloc(node) && + !(entry->flags & DM_FLAG_PRE_RELOC)) + return 0; + } + pr_debug(" - found match at '%s'\n", entry->name); ret = device_bind_with_driver_data(parent, entry, name, id->data, node, &dev); diff --git a/drivers/core/root.c b/drivers/core/root.c index 47d10b8..f918ee1 100644 --- a/drivers/core/root.c +++ b/drivers/core/root.c @@ -222,14 +222,12 @@ static int dm_scan_fdt_live(struct udevice *parent, int ret = 0, err;
for (np = node_parent->child; np; np = np->sibling) { - if (pre_reloc_only && - !of_find_property(np, "u-boot,dm-pre-reloc", NULL)) - continue; if (!of_device_is_available(np)) { pr_debug(" - ignoring disabled device\n"); continue; } - err = lists_bind_fdt(parent, np_to_ofnode(np), NULL); + err = lists_bind_fdt(parent, np_to_ofnode(np), NULL, + pre_reloc_only); if (err && !ret) { ret = err; debug("%s: ret=%d\n", np->name, ret); @@ -276,14 +274,12 @@ static int dm_scan_fdt_node(struct udevice *parent, const void *blob, continue; }
- if (pre_reloc_only && - !dm_fdt_pre_reloc(blob, offset)) - continue; if (!fdtdec_get_is_enabled(blob, offset)) { pr_debug(" - ignoring disabled device\n"); continue; } - err = lists_bind_fdt(parent, offset_to_ofnode(offset), NULL); + err = lists_bind_fdt(parent, offset_to_ofnode(offset), NULL, + pre_reloc_only); if (err && !ret) { ret = err; debug("%s: ret=%d\n", fdt_get_name(blob, offset, NULL), diff --git a/drivers/serial/serial-uclass.c b/drivers/serial/serial-uclass.c index ffdcae0..cc11474 100644 --- a/drivers/serial/serial-uclass.c +++ b/drivers/serial/serial-uclass.c @@ -61,7 +61,7 @@ static int serial_check_stdout(const void *blob, struct udevice **devp) * anyway. */ if (node > 0 && !lists_bind_fdt(gd->dm_root, offset_to_ofnode(node), - devp)) { + devp, false)) { if (!device_probe(*devp)) return 0; } diff --git a/drivers/timer/timer-uclass.c b/drivers/timer/timer-uclass.c index fe73f71..12ee6eb 100644 --- a/drivers/timer/timer-uclass.c +++ b/drivers/timer/timer-uclass.c @@ -108,7 +108,7 @@ int notrace dm_timer_init(void) * If the timer is not marked to be bound before * relocation, bind it anyway. */ - if (!lists_bind_fdt(dm_root(), node, &dev)) { + if (!lists_bind_fdt(dm_root(), node, &dev, false)) { ret = device_probe(dev); if (ret) return ret; diff --git a/include/dm/lists.h b/include/dm/lists.h index 13d1516..59094d7 100644 --- a/include/dm/lists.h +++ b/include/dm/lists.h @@ -53,10 +53,13 @@ int lists_bind_drivers(struct udevice *parent, bool pre_reloc_only); * @parent: parent device (root) * @node: device tree node to bind * @devp: if non-NULL, returns a pointer to the bound device + * @pre_reloc_only: If true, bind only nodes with special devicetree properties, + * or drivers with the DM_FLAG_PRE_RELOC flag. If false bind all drivers. * @return 0 if device was bound, -EINVAL if the device tree is invalid, * other -ve value on error */ -int lists_bind_fdt(struct udevice *parent, ofnode node, struct udevice **devp); +int lists_bind_fdt(struct udevice *parent, ofnode node, struct udevice **devp, + bool pre_reloc_only);
/** * device_bind_driver() - bind a device to a driver
The pre_reloc_only parameter description currently only mentions drivers with the DM_FLAG_PRE_RELOC flag, but does not mention the special device tree properties. Correct them.
Signed-off-by: Bin Meng bmeng.cn@gmail.com ---
include/dm/device-internal.h | 4 ++-- include/dm/lists.h | 4 ++-- include/dm/root.h | 17 +++++++++-------- 3 files changed, 13 insertions(+), 12 deletions(-)
diff --git a/include/dm/device-internal.h b/include/dm/device-internal.h index 02ac4c7..ee2b24a 100644 --- a/include/dm/device-internal.h +++ b/include/dm/device-internal.h @@ -74,8 +74,8 @@ int device_bind_with_driver_data(struct udevice *parent, * tree. * * @parent: Pointer to device's parent - * @pre_reloc_only: If true, bind the driver only if its DM_INIT_F flag is set. - * If false bind the driver always. + * @pre_reloc_only: If true, bind the driver only if its DM_FLAG_PRE_RELOC flag + * is set. If false bind the driver always. * @info: Name and platdata for this device * @devp: if non-NULL, returns a pointer to the bound device * @return 0 if OK, -ve on error diff --git a/include/dm/lists.h b/include/dm/lists.h index 59094d7..810e244 100644 --- a/include/dm/lists.h +++ b/include/dm/lists.h @@ -39,8 +39,8 @@ struct uclass_driver *lists_uclass_lookup(enum uclass_id id); * each one. The devices will have @parent as their parent. * * @parent: parent device (root) - * @early_only: If true, bind only drivers with the DM_INIT_F flag. If false - * bind all drivers. + * @pre_reloc_only: If true, bind only drivers with the DM_FLAG_PRE_RELOC flag. + * If false bind all drivers. */ int lists_bind_drivers(struct udevice *parent, bool pre_reloc_only);
diff --git a/include/dm/root.h b/include/dm/root.h index 2b9c6da..c8d629b 100644 --- a/include/dm/root.h +++ b/include/dm/root.h @@ -48,8 +48,8 @@ int dm_scan_platdata(bool pre_reloc_only); * the top-level subnodes are examined. * * @blob: Pointer to device tree blob - * @pre_reloc_only: If true, bind only drivers with the DM_FLAG_PRE_RELOC - * flag. If false bind all drivers. + * @pre_reloc_only: If true, bind only nodes with special devicetree properties, + * or drivers with the DM_FLAG_PRE_RELOC flag. If false bind all drivers. * @return 0 if OK, -ve on error */ int dm_scan_fdt(const void *blob, bool pre_reloc_only); @@ -62,8 +62,8 @@ int dm_scan_fdt(const void *blob, bool pre_reloc_only); * of "clocks" node. * * @blob: Pointer to device tree blob - * @pre_reloc_only: If true, bind only drivers with the DM_FLAG_PRE_RELOC - * flag. If false bind all drivers. + * @pre_reloc_only: If true, bind only nodes with special devicetree properties, + * or drivers with the DM_FLAG_PRE_RELOC flag. If false bind all drivers. * @return 0 if OK, -ve on error */ int dm_extended_scan_fdt(const void *blob, bool pre_reloc_only); @@ -76,8 +76,9 @@ int dm_extended_scan_fdt(const void *blob, bool pre_reloc_only); * programmaticaly. They should do this by calling device_bind() on each * device. * - * @pre_reloc_only: If true, bind only drivers with the DM_FLAG_PRE_RELOC - * flag. If false bind all drivers. + * @pre_reloc_only: If true, bind only nodes with special devicetree properties, + * or drivers with the DM_FLAG_PRE_RELOC flag. If false bind all drivers. + * @return 0 if OK, -ve on error */ int dm_scan_other(bool pre_reloc_only);
@@ -88,8 +89,8 @@ int dm_scan_other(bool pre_reloc_only); * then scans and binds available devices from platform data and the FDT. * This calls dm_init() to set up Driver Model structures. * - * @pre_reloc_only: If true, bind only drivers with the DM_FLAG_PRE_RELOC - * flag. If false bind all drivers. + * @pre_reloc_only: If true, bind only nodes with special devicetree properties, + * or drivers with the DM_FLAG_PRE_RELOC flag. If false bind all drivers. * @return 0 if OK, -ve on error */ int dm_init_and_scan(bool pre_reloc_only);
Commit f2006808f099: ("dm: core: parse chosen node") added a logic to parse the chosen node during dm_scan_fdt_node(), but unfortunately it missed adding the same logic in dm_scan_fdt_live(). This mirrors the logic in the livetree version.
The weird thing is that commit f2006808f099 did update the test case to test such logic, but I have no idea how the test case could pass.
With this fix, the following 2 test cases now pass:
Test: dm_test_bus_children: bus.c test/dm/bus.c:112, dm_test_bus_children(): num_devices == list_count_items(&uc->dev_head): Expected 7, got 6
Test: dm_test_fdt: test-fdt.c test/dm/test-fdt.c:184, dm_test_fdt(): num_devices == list_count_items(&uc->dev_head): Expected 7, got 6
Fixes: f2006808f099 ("dm: core: parse chosen node") Signed-off-by: Bin Meng bmeng.cn@gmail.com ---
drivers/core/root.c | 10 ++++++++++ 1 file changed, 10 insertions(+)
diff --git a/drivers/core/root.c b/drivers/core/root.c index f918ee1..535084e 100644 --- a/drivers/core/root.c +++ b/drivers/core/root.c @@ -222,6 +222,16 @@ static int dm_scan_fdt_live(struct udevice *parent, int ret = 0, err;
for (np = node_parent->child; np; np = np->sibling) { + /* "chosen" node isn't a device itself but may contain some: */ + if (!strcmp(np->name, "chosen")) { + pr_debug("parsing subnodes of "chosen"\n"); + + err = dm_scan_fdt_live(parent, np, pre_reloc_only); + if (err && !ret) + ret = err; + continue; + } + if (!of_device_is_available(np)) { pr_debug(" - ignoring disabled device\n"); continue;
Now that we fixed the pre-relocation driver binding for driver marked with DM_FLAG_PRE_RELOC flag, add a test case to cover that scenario.
Signed-off-by: Bin Meng bmeng.cn@gmail.com ---
arch/sandbox/dts/test.dts | 4 ++++ test/dm/bus.c | 2 +- test/dm/test-fdt.c | 29 ++++++++++++++++++++++++++--- 3 files changed, 31 insertions(+), 4 deletions(-)
diff --git a/arch/sandbox/dts/test.dts b/arch/sandbox/dts/test.dts index 491f889..f12410f 100644 --- a/arch/sandbox/dts/test.dts +++ b/arch/sandbox/dts/test.dts @@ -146,6 +146,10 @@ compatible = "denx,u-boot-fdt-test"; };
+ h-test { + compatible = "denx,u-boot-fdt-test1"; + }; + clocks { clk_fixed: clk-fixed { compatible = "fixed-clock"; diff --git a/test/dm/bus.c b/test/dm/bus.c index e9a4028..c41bcf7 100644 --- a/test/dm/bus.c +++ b/test/dm/bus.c @@ -104,7 +104,7 @@ UCLASS_DRIVER(testbus) = { /* Test that we can probe for children */ static int dm_test_bus_children(struct unit_test_state *uts) { - int num_devices = 7; + int num_devices = 8; struct udevice *bus; struct uclass *uc;
diff --git a/test/dm/test-fdt.c b/test/dm/test-fdt.c index 79b1f1d..3da384f 100644 --- a/test/dm/test-fdt.c +++ b/test/dm/test-fdt.c @@ -84,6 +84,25 @@ U_BOOT_DRIVER(testfdt_drv) = { .platdata_auto_alloc_size = sizeof(struct dm_test_pdata), };
+static const struct udevice_id testfdt1_ids[] = { + { + .compatible = "denx,u-boot-fdt-test1", + .data = DM_TEST_TYPE_FIRST }, + { } +}; + +U_BOOT_DRIVER(testfdt1_drv) = { + .name = "testfdt1_drv", + .of_match = testfdt1_ids, + .id = UCLASS_TEST_FDT, + .ofdata_to_platdata = testfdt_ofdata_to_platdata, + .probe = testfdt_drv_probe, + .ops = &test_ops, + .priv_auto_alloc_size = sizeof(struct dm_test_priv), + .platdata_auto_alloc_size = sizeof(struct dm_test_pdata), + .flags = DM_FLAG_PRE_RELOC, +}; + /* From here is the testfdt uclass code */ int testfdt_ping(struct udevice *dev, int pingval, int *pingret) { @@ -168,7 +187,7 @@ int dm_check_devices(struct unit_test_state *uts, int num_devices) /* Test that FDT-based binding works correctly */ static int dm_test_fdt(struct unit_test_state *uts) { - const int num_devices = 7; + const int num_devices = 8; struct udevice *dev; struct uclass *uc; int ret; @@ -208,8 +227,12 @@ static int dm_test_fdt_pre_reloc(struct unit_test_state *uts) ret = uclass_get(UCLASS_TEST_FDT, &uc); ut_assert(!ret);
- /* These is only one pre-reloc device */ - ut_asserteq(1, list_count_items(&uc->dev_head)); + /* + * These are 2 pre-reloc devices: + * one with "u-boot,dm-pre-reloc" property (a-test node), and the other + * one whose driver marked with DM_FLAG_PRE_RELOC flag (h-test node). + */ + ut_asserteq(2, list_count_items(&uc->dev_head));
return 0; }
This is currently out of order. Sort it.
Signed-off-by: Bin Meng bmeng.cn@gmail.com
---
drivers/timer/Kconfig | 110 +++++++++++++++++++++++++------------------------- 1 file changed, 55 insertions(+), 55 deletions(-)
diff --git a/drivers/timer/Kconfig b/drivers/timer/Kconfig index a7d600b..8c0f356 100644 --- a/drivers/timer/Kconfig +++ b/drivers/timer/Kconfig @@ -37,6 +37,12 @@ config TIMER_EARLY use an early timer. These functions must be supported by your timer driver: timer_early_get_count() and timer_early_get_rate().
+config AG101P_TIMER + bool "AG101P timer support" + depends on TIMER && NDS32 + help + Select this to enable a timer for AG01P devices. + config ALTERA_TIMER bool "Altera timer support" depends on TIMER @@ -44,6 +50,34 @@ config ALTERA_TIMER Select this to enable a timer for Altera devices. Please find details on the "Embedded Peripherals IP User Guide" of Altera.
+config ARC_TIMER + bool "ARC timer support" + depends on TIMER && ARC && CLK + help + Select this to enable built-in ARC timers. + ARC cores may have up to 2 built-in timers: timer0 and timer1, + usually at least one of them exists. Either of them is supported + in U-Boot. + +config AST_TIMER + bool "Aspeed ast2400/ast2500 timer support" + depends on TIMER + default y if ARCH_ASPEED + help + Select this to enable timer for Aspeed ast2400/ast2500 devices. + This is a simple sys timer driver, it is compatible with lib/time.c, + but does not support any interrupts. Even though SoC has 8 hardware + counters, they are all treated as a single device by this driver. + This is mostly because they all share several registers which + makes it difficult to completely separate them. + +config ATCPIT100_TIMER + bool "ATCPIT100 timer support" + depends on TIMER + help + Select this to enable a ATCPIT100 timer which will be embedded + in AE3XX, AE250 boards. + config ATMEL_PIT_TIMER bool "Atmel periodic interval timer support" depends on TIMER @@ -66,18 +100,12 @@ config DESIGNWARE_APB_TIMER Enables support for the Designware APB Timer driver. This timer is present on Altera SoCFPGA SoCs.
-config SANDBOX_TIMER - bool "Sandbox timer support" - depends on SANDBOX && TIMER - help - Select this to enable an emulated timer for sandbox. It gets - time from host os. - -config X86_TSC_TIMER - bool "x86 Time-Stamp Counter (TSC) timer support" - depends on TIMER && X86 +config MPC83XX_TIMER + bool "MPC83xx timer support" + depends on TIMER help - Select this to enable Time-Stamp Counter (TSC) timer for x86. + Select this to enable support for the timer found on + devices based on the MPC83xx family of SoCs.
config OMAP_TIMER bool "Omap timer support" @@ -85,17 +113,19 @@ config OMAP_TIMER help Select this to enable an timer for Omap devices.
-config AST_TIMER - bool "Aspeed ast2400/ast2500 timer support" +config ROCKCHIP_TIMER + bool "Rockchip timer support" depends on TIMER - default y if ARCH_ASPEED help - Select this to enable timer for Aspeed ast2400/ast2500 devices. - This is a simple sys timer driver, it is compatible with lib/time.c, - but does not support any interrupts. Even though SoC has 8 hardware - counters, they are all treated as a single device by this driver. - This is mostly because they all share several registers which - makes it difficult to completely separate them. + Select this to enable support for the timer found on + Rockchip devices. + +config SANDBOX_TIMER + bool "Sandbox timer support" + depends on SANDBOX && TIMER + help + Select this to enable an emulated timer for sandbox. It gets + time from host os.
config STI_TIMER bool "STi timer support" @@ -104,47 +134,17 @@ config STI_TIMER help Select this to enable a timer for STi devices.
-config ARC_TIMER - bool "ARC timer support" - depends on TIMER && ARC && CLK - help - Select this to enable built-in ARC timers. - ARC cores may have up to 2 built-in timers: timer0 and timer1, - usually at least one of them exists. Either of them is supported - in U-Boot. - -config AG101P_TIMER - bool "AG101P timer support" - depends on TIMER && NDS32 - help - Select this to enable a timer for AG01P devices. - -config ATCPIT100_TIMER - bool "ATCPIT100 timer support" - depends on TIMER - help - Select this to enable a ATCPIT100 timer which will be embeded - in AE3XX, AE250 boards. - -config ROCKCHIP_TIMER - bool "Rockchip timer support" - depends on TIMER - help - Select this to enable support for the timer found on - Rockchip devices. - config STM32_TIMER - bool "STM32 timer support" + bool "STM32 timer support" depends on TIMER help Select this to enable support for the timer found on STM32 devices.
-config MPC83XX_TIMER - bool "MPC83xx timer support" - depends on TIMER +config X86_TSC_TIMER + bool "x86 Time-Stamp Counter (TSC) timer support" + depends on TIMER && X86 help - Select this to enable support for the timer found on - devices based on the MPC83xx family of SoCs. + Select this to enable Time-Stamp Counter (TSC) timer for x86.
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Bin Meng