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00a97fc57c
Add voltage switching infrastructure for UHS-I modes by integrating both regulator framework (for supply voltage control) and pinctrl state switching (for pin drive strength optimization). - Add regulator supply parsing and voltage switching callback - Add optional pinctrl state switching between "default" (3.3V) and "state_uhs" (1.8V) configurations - Enable coordinated voltage and pin configuration changes for UHS modes This provides complete voltage switching support while maintaining backward compatibility when pinctrl states are not defined. Tested-by: Anand Moon <linux.amoon@gmail.com> Tested-by: Trevor Gamblin <tgamblin@baylibre.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Troy Mitchell <troy.mitchell@linux.dev> Tested-by: Vincent Legoll <legoll@online.fr> Signed-off-by: Iker Pedrosa <ikerpedrosam@gmail.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>