- 29 8月, 2017 1 次提交
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由 Masahiro Yamada 提交于
Linux supports platform_get_resource_byname() to look up a resource by name. We want a similar helper. It is useful when a device node has named register regions. Signed-off-by: NMasahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: NSimon Glass <sjg@chromium.org>
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- 29 7月, 2017 3 次提交
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由 Patrice Chotard 提交于
This function is usefull to get phandle number contained in a property list. For example, this allows to allocate the right amount of memory to keep clock's reference contained into the "clocks" property. To implement it, either of_count_phandle_with_args() or fdtdec_parse_phandle_with_args() are used respectively for live tree and flat tree. By passing index = -1, these 2 functions returns the number of phandle contained into the property list. Add also the dev_count_phandle_with_args() based on ofnode_count_phandle_with_args() Signed-off-by: NPatrice Chotard <patrice.chotard@st.com> Reviewed-by: NSimon Glass <sjg@chromium.org>
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由 Simon Glass 提交于
At present this function only supports 32-bit (single-cell) values. Update it to support two-cell values also. Signed-off-by: NSimon Glass <sjg@chromium.org> Tested-by: NMarcel Ziswiler <marcel.ziswiler@toradex.com> Tested-on: Beaver, Jetson-TK1 Tested-by: NStephen Warren <swarren@nvidia.com>
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由 Simon Glass 提交于
We sometimes need to read a resource from an arbitrary node. In any case for consistency we should not put the live-tree switching code in a dev_read_...() function. Update this to suit. Signed-off-by: NSimon Glass <sjg@chromium.org> Tested-by: NMarcel Ziswiler <marcel.ziswiler@toradex.com> Tested-on: Beaver, Jetson-TK1 Tested-by: NStephen Warren <swarren@nvidia.com>
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- 12 7月, 2017 7 次提交
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由 Masahiro Yamada 提交于
DTB is encoded in big endian. When we retrieve property values, we need to use fdt32_to_cpu (aka be32_to_cpu) for endian conversion. This is a bit error-prone, but sparse is useful to detect endian mismatch. We need to use (fdt32_t *) instead of (u32 *) for a pointer of a property value. Otherwise sparse warns "cast to restricted __be32". Signed-off-by: NMasahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: NSimon Glass <sjg@chromium.org>
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由 Masahiro Yamada 提交于
Reuse ofnode_get_property() to simplify the implementation. Signed-off-by: NMasahiro Yamada <yamada.masahiro@socionext.com> Acked-by: NSimon Glass <sjg@chromium.org>
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由 Masahiro Yamada 提交于
This function returns the pointer to the value of a node property. The current name ofnode_read_prop() is confusing. Follow the naming of_get_property() from Linux. The return type (const u32 *) is wrong. DT property values can be strings as well as integers. This is why of_get_property/fdt_getprop returns an opaque pointer. Signed-off-by: NMasahiro Yamada <yamada.masahiro@socionext.com> Acked-by: NSimon Glass <sjg@chromium.org>
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由 Masahiro Yamada 提交于
The code inside the if-block is the same as of_get_property(). Signed-off-by: NMasahiro Yamada <yamada.masahiro@socionext.com> Acked-by: NSimon Glass <sjg@chromium.org>
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由 Masahiro Yamada 提交于
This will clarify the code. Signed-off-by: NMasahiro Yamada <yamada.masahiro@socionext.com> Acked-by: NSimon Glass <sjg@chromium.org>
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由 Simon Glass 提交于
The of_n_addr_cells() and of_n_size_cells() functions are useful for getting the size of addresses in a node, but in a few places U-Boot needs to obtain the actual property value for a node without walking up the stack. Add functions for this and just the existing code to use it. Add a comment to the existing ofnode functions which do not do the right thing with a flat tree. This fixes a problem reading PCI addresses. Signed-off-by: NSimon Glass <sjg@chromium.org> Tested-by: NMarcel Ziswiler <marcel.ziswiler@toradex.com> Tested-on: Beaver, Jetson-TK1
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由 Simon Glass 提交于
This provides a way to find the number of strings in a string list. Add it and also fix up the comment for ofnode_read_string_index(). Signed-off-by: NSimon Glass <sjg@chromium.org> Tested-by: NMarcel Ziswiler <marcel.ziswiler@toradex.com> Tested-on: Beaver, Jetson-TK1
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- 01 6月, 2017 4 次提交
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由 Simon Glass 提交于
Add some definitions and helpers for livetree in the main of.h header file. These include: - reading multi-cell integers - default number of address/size cells - functions for comparing names Signed-off-by: NSimon Glass <sjg@chromium.org>
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由 Simon Glass 提交于
These two functions have an of_ prefix which conflicts with naming used in of_addr. Rename them: fdt_read_number fdt_support_bus_default_count_cells Signed-off-by: NSimon Glass <sjg@chromium.org>
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由 Simon Glass 提交于
Add functions to add addresses in the device tree using ofnode references. Signed-off-by: NSimon Glass <sjg@chromium.org>
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由 Simon Glass 提交于
Since U-Boot supports both a live tree and a flat tree, we need an easy way to access the tree without worrying about which is currently active. To support this, U-Boot has the concept of an ofnode, which can refer either to a live tree node or a flat tree node. For the live tree, the reference contains a pointer to the node (struct device_node *) or NULL if the node is invalid. For the flat tree, the reference contains the node offset or -1 if the node is invalid. Add a basic set of operations using ofnodes. These are implemented by using either libfdt functions (in the case of a flat DT reference) or the live-tree of_...() functions. Note that it is not possible to have both live and flat references active at the same time. As soon as the live tree is available, everything in U-Boot should switch to using that. This avoids confusion and allows us to assume that the type of a reference is simply based on whether we have a live tree yet, or not. Signed-off-by: NSimon Glass <sjg@chromium.org>
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