6e58e64501
This imports device specific DTS pruning from https://github.com/UI-Packages/kernel_e200/blob/master/arch/mips/cavium-octeon/octeon-platform.c#L1067 - Reduce MMC clock frequency on E200/E220 to make MMC communication reliable again. See linked issue. - Remove unused MMC node on E300. Link: https://github.com/openwrt/openwrt/issues/13762 Signed-off-by: Jakob Haufe <sur5r@sur5r.net> Link: https://github.com/openwrt/openwrt/pull/19229 Signed-off-by: Robert Marko <robimarko@gmail.com>
81 lines
2.4 KiB
Diff
81 lines
2.4 KiB
Diff
commit eb6c3ba1d42fd087708f568ca220ff557f22104e
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Author: Jakob Haufe <sur5r@sur5r.net>
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Date: Tue Jun 17 13:58:19 2025 +0200
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MIPS: OCTEON: Add UBNT specific DTS pruning
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This imports device specific DTS pruning from
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https://github.com/UI-Packages/kernel_e200/blob/master/arch/mips/cavium-octeon/octeon-platform.c#L1067
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- Reduce MMC clock frequency on E200/E220 to make
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MMC communication reliable again. See linked issue.
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- Remove unused MMC node on E300.
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Related: https://github.com/openwrt/openwrt/issues/13762
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Signed-off-by: Jakob Haufe <sur5r@sur5r.net>
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--- a/arch/mips/cavium-octeon/octeon-platform.c
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+++ b/arch/mips/cavium-octeon/octeon-platform.c
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@@ -1133,6 +1133,41 @@ end_led:
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}
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#endif
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+
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+ return 0;
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+}
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+
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+int __init ubnt_prune_device_tree(void)
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+{
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+ /* MMC on UBNT */
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+ pr_info("UBNT board DTS pruning...\n");
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+ if (octeon_bootinfo->board_type == CVMX_BOARD_TYPE_UBNT_E300) {
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+ pr_info("UBNT E300 found, looking for mmc-slot@2\n");
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+ // Remove unused MMC slot definition
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+ int mmc_slot2 = fdt_path_offset(initial_boot_params, "/soc/mmc/mmc-slot@2");
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+
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+ if (mmc_slot2 > 0) {
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+ pr_info("UBNT E300 found, deleting mmc-slot@2\n");
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+ fdt_nop_node(initial_boot_params, mmc_slot2);
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+ } else {
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+ pr_info("mmc-slot@2 not found\n");
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+ }
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+ } else if (octeon_bootinfo->board_type == CVMX_BOARD_TYPE_UBNT_E200 ||
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+ octeon_bootinfo->board_type == CVMX_BOARD_TYPE_UBNT_E220) {
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+ pr_info("UBNT E200/E220 found, looking for mmc-slot@0\n");
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+ int mmc_slot0 = fdt_path_offset(initial_boot_params, "/soc/mmc/mmc-slot@0");
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+
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+ u32 freq = 26000000;
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+
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+ if (mmc_slot0 > 0) {
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+ pr_info("UBNT E200/E220 mmc-slot@0 found, setting frequency to 26MHz");
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+ fdt_setprop_inplace_cell(initial_boot_params, mmc_slot0,
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+ "spi-max-frequency", freq);
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+ } else {
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+ pr_info("mmc-slot@0 not found\n");
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+ }
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+ }
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+
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return 0;
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}
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--- a/arch/mips/cavium-octeon/setup.c
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+++ b/arch/mips/cavium-octeon/setup.c
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@@ -1168,6 +1168,7 @@ void __init prom_free_prom_memory(void)
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}
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}
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+int __init ubnt_prune_device_tree(void);
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void __init octeon_fill_mac_addresses(void);
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void __init device_tree_init(void)
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@@ -1207,6 +1208,9 @@ void __init device_tree_init(void)
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octeon_prune_device_tree();
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pr_info("Using internal Device Tree.\n");
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}
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+
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+ ubnt_prune_device_tree();
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+
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if (fill_mac)
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octeon_fill_mac_addresses();
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unflatten_and_copy_device_tree();
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