From 7ad6d362016a875eaee0d227365b74acd464050b Mon Sep 17 00:00:00 2001 From: Andre Przywara Date: Thu, 26 Mar 2020 12:11:34 +0000 Subject: plat/stm32: Use generic fdt_get_reg_props_by_name() The STM32 platform port parse DT nodes to find base address to peripherals. It does this by using its own implementation, even though this functionality is generic and actually widely useful outside of the STM32 code. Re-implement fdt_get_reg_props_by_name() on top of the newly introduced fdt_get_reg_props_by_index() function, and move it to fdt_wrapper.c. This is removes the assumption that #address-cells and #size-cells are always one. Change-Id: I6d584930262c732b6e0356d98aea50b2654f789d Signed-off-by: Andre Przywara --- common/fdt_wrappers.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'common') diff --git a/common/fdt_wrappers.c b/common/fdt_wrappers.c index 842d71339..2c4b9c353 100644 --- a/common/fdt_wrappers.c +++ b/common/fdt_wrappers.c @@ -276,3 +276,21 @@ int fdt_get_reg_props_by_index(const void *dtb, int node, int index, return 0; } + +/******************************************************************************* + * This function fills reg node info (base & size) with an index found by + * checking the reg-names node. + * Returns 0 on success and a negative FDT error code on failure. + ******************************************************************************/ +int fdt_get_reg_props_by_name(const void *dtb, int node, const char *name, + uintptr_t *base, size_t *size) +{ + int index; + + index = fdt_stringlist_search(dtb, node, "reg-names", name); + if (index < 0) { + return index; + } + + return fdt_get_reg_props_by_index(dtb, node, index, base, size); +} -- cgit v1.2.3